Adds all question csvs

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301,Remove Invalid Parentheses,43.3%,Hard,5.575610066775206, https://leetcode.com/problems/remove-invalid-parentheses
273,Integer to English Words,27.1%,Hard,5.444753025333917, https://leetcode.com/problems/integer-to-english-words
953,Verifying an Alien Dictionary,54.1%,Easy,5.313895983892627, https://leetcode.com/problems/verifying-an-alien-dictionary
158,Read N Characters Given Read4 II - Call multiple times,33.8%,Hard,5.183038942451338, https://leetcode.com/problems/read-n-characters-given-read4-ii-call-multiple-times
297,Serialize and Deserialize Binary Tree,47.5%,Hard,5.090902981800583, https://leetcode.com/problems/serialize-and-deserialize-binary-tree
10,Regular Expression Matching,26.8%,Hard,4.960045940359294, https://leetcode.com/problems/regular-expression-matching
91,Decode Ways,24.7%,Medium,4.926071339059624, https://leetcode.com/problems/decode-ways
253,Meeting Rooms II,45.7%,Medium,4.890863444823654, https://leetcode.com/problems/meeting-rooms-ii
238,Product of Array Except Self,60.1%,Medium,4.787304832474671, https://leetcode.com/problems/product-of-array-except-self
680,Valid Palindrome II,36.6%,Easy,4.727432294246022, https://leetcode.com/problems/valid-palindrome-ii
15,3Sum,26.8%,Medium,4.716880252749641, https://leetcode.com/problems/3sum
560,Subarray Sum Equals K,43.9%,Medium,4.681694359055468, https://leetcode.com/problems/subarray-sum-equals-k
278,First Bad Version,35.7%,Easy,4.667124795676079, https://leetcode.com/problems/first-bad-version
76,Minimum Window Substring,34.6%,Hard,4.624844309488783, https://leetcode.com/problems/minimum-window-substring
973,K Closest Points to Origin,63.8%,Medium,4.6226837423062355, https://leetcode.com/problems/k-closest-points-to-origin
67,Add Binary,45.2%,Easy,4.59057803547337, https://leetcode.com/problems/add-binary
23,Merge k Sorted Lists,40.2%,Hard,4.540902119231776, https://leetcode.com/problems/merge-k-sorted-lists
283,Move Zeroes,57.8%,Easy,4.539910062491303, https://leetcode.com/problems/move-zeroes
1249,Minimum Remove to Make Valid Parentheses,62.5%,Medium,4.510651510608414, https://leetcode.com/problems/minimum-remove-to-make-valid-parentheses
125,Valid Palindrome,36.7%,Easy,4.472291401117124, https://leetcode.com/problems/valid-palindrome
29,Divide Two Integers,16.4%,Medium,4.451722795491452, https://leetcode.com/problems/divide-two-integers
31,Next Permutation,32.6%,Medium,4.413309355076113, https://leetcode.com/problems/next-permutation
173,Binary Search Tree Iterator,56.6%,Medium,4.402058148743651, https://leetcode.com/problems/binary-search-tree-iterator
282,Expression Add Operators,35.5%,Hard,4.392818642206004, https://leetcode.com/problems/expression-add-operators
211,Add and Search Word - Data structure design,38.1%,Medium,4.32373689930886, https://leetcode.com/problems/add-and-search-word-data-structure-design
65,Valid Number,15.3%,Hard,4.274687734189391, https://leetcode.com/problems/valid-number
157,Read N Characters Given Read4,34.2%,Easy,4.211806122562663, https://leetcode.com/problems/read-n-characters-given-read4
124,Binary Tree Maximum Path Sum,34.3%,Hard,4.173080791636589, https://leetcode.com/problems/binary-tree-maximum-path-sum
314,Binary Tree Vertical Order Traversal,45.3%,Medium,4.169848738461142, https://leetcode.com/problems/binary-tree-vertical-order-traversal
17,Letter Combinations of a Phone Number,46.8%,Medium,4.164730824697368, https://leetcode.com/problems/letter-combinations-of-a-phone-number
56,Merge Intervals,39.3%,Medium,4.104801117510305, https://leetcode.com/problems/merge-intervals
426,Convert Binary Search Tree to Sorted Doubly Linked List,59.1%,Medium,4.095652308198605, https://leetcode.com/problems/convert-binary-search-tree-to-sorted-doubly-linked-list
269,Alien Dictionary,33.3%,Hard,4.0805624877290665, https://leetcode.com/problems/alien-dictionary
1,Two Sum,45.6%,Easy,4.011510827995362, https://leetcode.com/problems/two-sum
133,Clone Graph,34.8%,Medium,3.9966560335245793, https://leetcode.com/problems/clone-graph
325,Maximum Size Subarray Sum Equals k,46.8%,Medium,3.9738002945104958, https://leetcode.com/problems/maximum-size-subarray-sum-equals-k
438,Find All Anagrams in a String,43.3%,Medium,3.9600414146616707, https://leetcode.com/problems/find-all-anagrams-in-a-string
311,Sparse Matrix Multiplication,61.9%,Medium,3.8291843732203814, https://leetcode.com/problems/sparse-matrix-multiplication
415,Add Strings,47.5%,Easy,3.823224938890351, https://leetcode.com/problems/add-strings
200,Number of Islands,46.8%,Medium,3.8178638361422226, https://leetcode.com/problems/number-of-islands
336,Palindrome Pairs,33.7%,Hard,3.774867877530413, https://leetcode.com/problems/palindrome-pairs
215,Kth Largest Element in an Array,55.4%,Medium,3.7586134025612274, https://leetcode.com/problems/kth-largest-element-in-an-array
543,Diameter of Binary Tree,48.4%,Easy,3.7178469184757565, https://leetcode.com/problems/diameter-of-binary-tree
257,Binary Tree Paths,51.5%,Easy,3.692630656645929, https://leetcode.com/problems/binary-tree-paths
523,Continuous Subarray Sum,24.6%,Medium,3.6834633730887782, https://leetcode.com/problems/continuous-subarray-sum
277,Find the Celebrity,41.8%,Medium,3.616681579302239, https://leetcode.com/problems/find-the-celebrity
621,Task Scheduler,50.1%,Medium,3.6045478094509233, https://leetcode.com/problems/task-scheduler
43,Multiply Strings,33.9%,Medium,3.5921750861240196, https://leetcode.com/problems/multiply-strings
98,Validate Binary Search Tree,27.8%,Medium,3.581806727833732, https://leetcode.com/problems/validate-binary-search-tree
42,Trapping Rain Water,48.9%,Hard,3.5778834321997866, https://leetcode.com/problems/trapping-rain-water
689,Maximum Sum of 3 Non-Overlapping Subarrays,46.3%,Hard,3.5588948279750623, https://leetcode.com/problems/maximum-sum-of-3-non-overlapping-subarrays
349,Intersection of Two Arrays,62.5%,Easy,3.498653100218706, https://leetcode.com/problems/intersection-of-two-arrays
340,Longest Substring with At Most K Distinct Characters,44.1%,Hard,3.455560352078738, https://leetcode.com/problems/longest-substring-with-at-most-k-distinct-characters
121,Best Time to Buy and Sell Stock,50.5%,Easy,3.423204938390614, https://leetcode.com/problems/best-time-to-buy-and-sell-stock
88,Merge Sorted Array,39.4%,Easy,3.421005187994902, https://leetcode.com/problems/merge-sorted-array
114,Flatten Binary Tree to Linked List,49.3%,Medium,3.3920934149388993, https://leetcode.com/problems/flatten-binary-tree-to-linked-list
138,Copy List with Random Pointer,36.4%,Medium,3.3873161764915185, https://leetcode.com/problems/copy-list-with-random-pointer
636,Exclusive Time of Functions,51.9%,Medium,3.3832963809646075, https://leetcode.com/problems/exclusive-time-of-functions
721,Accounts Merge,48.8%,Medium,3.3545947466566406, https://leetcode.com/problems/accounts-merge
161,One Edit Distance,32.3%,Medium,3.353178877168441, https://leetcode.com/problems/one-edit-distance
146,LRU Cache,33.2%,Medium,3.347163586386296, https://leetcode.com/problems/lru-cache
304,Range Sum Query 2D - Immutable,38.6%,Medium,3.333446415469864, https://leetcode.com/problems/range-sum-query-2d-immutable
199,Binary Tree Right Side View,54.1%,Medium,3.304270095581444, https://leetcode.com/problems/binary-tree-right-side-view
139,Word Break,40.1%,Medium,3.2929683383994965, https://leetcode.com/problems/word-break
785,Is Graph Bipartite?,47.5%,Medium,3.2902637558626, https://leetcode.com/problems/is-graph-bipartite
33,Search in Rotated Sorted Array,34.5%,Medium,3.1594067144213107, https://leetcode.com/problems/search-in-rotated-sorted-array
317,Shortest Distance from All Buildings,41.4%,Hard,3.1476976438713056, https://leetcode.com/problems/shortest-distance-from-all-buildings
143,Reorder List,37.1%,Medium,3.0702582463605563, https://leetcode.com/problems/reorder-list
71,Simplify Path,32.6%,Medium,3.0484180406242536, https://leetcode.com/problems/simplify-path
236,Lowest Common Ancestor of a Binary Tree,45.7%,Medium,3.0428333907886373, https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree
286,Walls and Gates,54.5%,Medium,3.0338274496253073, https://leetcode.com/problems/walls-and-gates
986,Interval List Intersections,67.3%,Medium,3.0089200665434412, https://leetcode.com/problems/interval-list-intersections
34,Find First and Last Position of Element in Sorted Array,36.2%,Medium,2.98689800584703, https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array
341,Flatten Nested List Iterator,52.9%,Medium,2.8560409644057407, https://leetcode.com/problems/flatten-nested-list-iterator
896,Monotonic Array,57.9%,Easy,2.8395358910441173, https://leetcode.com/problems/monotonic-array
398,Random Pick Index,56.0%,Medium,2.8139239778761542, https://leetcode.com/problems/random-pick-index
20,Valid Parentheses,39.0%,Easy,2.8025626605638214, https://leetcode.com/problems/valid-parentheses
227,Basic Calculator II,36.9%,Medium,2.7631872114373093, https://leetcode.com/problems/basic-calculator-ii
57,Insert Interval,33.5%,Hard,2.7331319297198133, https://leetcode.com/problems/insert-interval
270,Closest Binary Search Tree Value,48.5%,Easy,2.6434272396312797, https://leetcode.com/problems/closest-binary-search-tree-value
350,Intersection of Two Arrays II,51.4%,Easy,2.6433299851110665, https://leetcode.com/problems/intersection-of-two-arrays-ii
360,Sort Transformed Array,48.8%,Medium,2.5159168865305603, https://leetcode.com/problems/sort-transformed-array
825,Friends Of Appropriate Ages,42.7%,Medium,2.5148820184509786, https://leetcode.com/problems/friends-of-appropriate-ages
358,Rearrange String k Distance Apart,34.9%,Hard,2.5060004328478, https://leetcode.com/problems/rearrange-string-k-distance-apart
32,Longest Valid Parentheses,28.4%,Hard,2.5024857812383545, https://leetcode.com/problems/longest-valid-parentheses
78,Subsets,62.0%,Medium,2.499447442601738, https://leetcode.com/problems/subsets
247,Strobogrammatic Number II,47.6%,Medium,2.4817551197053462, https://leetcode.com/problems/strobogrammatic-number-ii
348,Design Tic-Tac-Toe,54.3%,Medium,2.468847008770655, https://leetcode.com/problems/design-tic-tac-toe
708,Insert into a Sorted Circular Linked List,31.6%,Medium,2.4286015114138553, https://leetcode.com/problems/insert-into-a-sorted-circular-linked-list
339,Nested List Weight Sum,74.0%,Easy,2.4235186826029427, https://leetcode.com/problems/nested-list-weight-sum
51,N-Queens,46.6%,Hard,2.3533410529606655, https://leetcode.com/problems/n-queens
824,Goat Latin,63.4%,Easy,2.335791734454864, https://leetcode.com/problems/goat-latin
300,Longest Increasing Subsequence,42.6%,Medium,2.311623040070363, https://leetcode.com/problems/longest-increasing-subsequence
246,Strobogrammatic Number,45.0%,Easy,2.3033292329266852, https://leetcode.com/problems/strobogrammatic-number
75,Sort Colors,47.3%,Medium,2.26383073754557, https://leetcode.com/problems/sort-colors
670,Maximum Swap,43.6%,Medium,2.243417413534214, https://leetcode.com/problems/maximum-swap
958,Check Completeness of a Binary Tree,52.1%,Medium,2.2371220522106188, https://leetcode.com/problems/check-completeness-of-a-binary-tree
380,Insert Delete GetRandom O(1),47.5%,Medium,2.2300170531752253, https://leetcode.com/problems/insert-delete-getrandom-o1
285,Inorder Successor in BST,40.4%,Medium,2.2141456653587395, https://leetcode.com/problems/inorder-successor-in-bst
463,Island Perimeter,65.7%,Easy,2.1989334578253232, https://leetcode.com/problems/island-perimeter
938,Range Sum of BST,81.3%,Easy,2.18562625585131, https://leetcode.com/problems/range-sum-of-bst
987,Vertical Order Traversal of a Binary Tree,36.6%,Medium,2.1846999517750083, https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree
224,Basic Calculator,36.8%,Hard,2.157363357784235, https://leetcode.com/problems/basic-calculator
126,Word Ladder II,22.1%,Hard,2.155302887907243, https://leetcode.com/problems/word-ladder-ii
109,Convert Sorted List to Binary Search Tree,47.7%,Medium,2.12389330425067, https://leetcode.com/problems/convert-sorted-list-to-binary-search-tree
528,Random Pick with Weight,43.9%,Medium,2.108026094329404, https://leetcode.com/problems/random-pick-with-weight
53,Maximum Subarray,46.5%,Easy,2.1007977216847413, https://leetcode.com/problems/maximum-subarray
162,Find Peak Element,43.3%,Medium,2.097923147793266, https://leetcode.com/problems/find-peak-element
449,Serialize and Deserialize BST,52.0%,Medium,2.0739609058750252, https://leetcode.com/problems/serialize-and-deserialize-bst
252,Meeting Rooms,54.6%,Easy,2.0566920989085755, https://leetcode.com/problems/meeting-rooms
3,Longest Substring Without Repeating Characters,30.4%,Medium,2.0517637291630937, https://leetcode.com/problems/longest-substring-without-repeating-characters
498,Diagonal Traverse,48.2%,Medium,2.043242115882686, https://leetcode.com/problems/diagonal-traverse
597,Friend Requests I: Overall Acceptance Rate,41.0%,Easy,2.027359179427378, https://leetcode.com/problems/friend-requests-i-overall-acceptance-rate
13,Roman to Integer,55.7%,Easy,2.01479997556304, https://leetcode.com/problems/roman-to-integer
251,Flatten 2D Vector,45.7%,Medium,1.9729845608202703, https://leetcode.com/problems/flatten-2d-vector
5,Longest Palindromic Substring,29.5%,Medium,1.9699539495822616, https://leetcode.com/problems/longest-palindromic-substring
127,Word Ladder,29.6%,Medium,1.9658429548852365, https://leetcode.com/problems/word-ladder
1428,Leftmost Column with at Least a One,46.8%,Medium,1.9587705311106522, https://leetcode.com/problems/leftmost-column-with-at-least-a-one
791,Custom Sort String,65.7%,Medium,1.9502755018573026, https://leetcode.com/problems/custom-sort-string
419,Battleships in a Board,70.0%,Medium,1.9320451089181416, https://leetcode.com/problems/battleships-in-a-board
494,Target Sum,46.3%,Medium,1.9292457672677412, https://leetcode.com/problems/target-sum
239,Sliding Window Maximum,43.0%,Hard,1.9141431781910356, https://leetcode.com/problems/sliding-window-maximum
772,Basic Calculator III,41.3%,Hard,1.83961549040569, https://leetcode.com/problems/basic-calculator-iii
8,String to Integer (atoi),15.4%,Medium,1.8248495500300532, https://leetcode.com/problems/string-to-integer-atoi
305,Number of Islands II,40.1%,Hard,1.7943361261547834, https://leetcode.com/problems/number-of-islands-ii
2,Add Two Numbers,33.9%,Medium,1.7797160813383437, https://leetcode.com/problems/add-two-numbers
767,Reorganize String,48.7%,Medium,1.763473840984625, https://leetcode.com/problems/reorganize-string
632,Smallest Range Covering Elements from K Lists,52.4%,Hard,1.7399831997043351, https://leetcode.com/problems/smallest-range-covering-elements-from-k-lists
381,Insert Delete GetRandom O(1) - Duplicates allowed,34.1%,Hard,1.735473057934797, https://leetcode.com/problems/insert-delete-getrandom-o1-duplicates-allowed
206,Reverse Linked List,62.5%,Easy,1.7296971379749975, https://leetcode.com/problems/reverse-linked-list
602,Friend Requests II: Who Has the Most Friends,53.4%,Medium,1.7191182434527041, https://leetcode.com/problems/friend-requests-ii-who-has-the-most-friends
393,UTF-8 Validation,37.5%,Medium,1.7125378103037587, https://leetcode.com/problems/utf-8-validation
44,Wildcard Matching,24.7%,Hard,1.6993713125769454, https://leetcode.com/problems/wildcard-matching
249,Group Shifted Strings,55.1%,Medium,1.681514431400676, https://leetcode.com/problems/group-shifted-strings
308,Range Sum Query 2D - Mutable,35.6%,Hard,1.6796421711073488, https://leetcode.com/problems/range-sum-query-2d-mutable
567,Permutation in String,44.4%,Medium,1.6775468592381628, https://leetcode.com/problems/permutation-in-string
46,Permutations,63.5%,Medium,1.6727146787726128, https://leetcode.com/problems/permutations
49,Group Anagrams,56.9%,Medium,1.6634098456962998, https://leetcode.com/problems/group-anagrams
921,Minimum Add to Make Parentheses Valid,73.7%,Medium,1.657222079227145, https://leetcode.com/problems/minimum-add-to-make-parentheses-valid
394,Decode String,50.0%,Medium,1.639247462442617, https://leetcode.com/problems/decode-string
218,The Skyline Problem,34.6%,Hard,1.6158688027643908, https://leetcode.com/problems/the-skyline-problem
658,Find K Closest Elements,40.9%,Medium,1.6142837737005458, https://leetcode.com/problems/find-k-closest-elements
432,All O`one Data Structure,32.4%,Hard,1.6115746653838356, https://leetcode.com/problems/all-oone-data-structure
477,Total Hamming Distance,50.4%,Medium,1.6077790787664574, https://leetcode.com/problems/total-hamming-distance
647,Palindromic Substrings,60.6%,Medium,1.604512052240803, https://leetcode.com/problems/palindromic-substrings
408,Valid Word Abbreviation,30.6%,Easy,1.591893602783191, https://leetcode.com/problems/valid-word-abbreviation
4,Median of Two Sorted Arrays,29.6%,Hard,1.5846309908488054, https://leetcode.com/problems/median-of-two-sorted-arrays
468,Validate IP Address,24.1%,Medium,1.582769665351939, https://leetcode.com/problems/validate-ip-address
105,Construct Binary Tree from Preorder and Inorder Traversal,48.8%,Medium,1.5718267400182278, https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal
38,Count and Say,44.6%,Easy,1.569507967682265, https://leetcode.com/problems/count-and-say
21,Merge Two Sorted Lists,53.5%,Easy,1.54824799568769, https://leetcode.com/problems/merge-two-sorted-lists
230,Kth Smallest Element in a BST,60.2%,Medium,1.53927525756437, https://leetcode.com/problems/kth-smallest-element-in-a-bst
678,Valid Parenthesis String,31.0%,Medium,1.5238562476062738, https://leetcode.com/problems/valid-parenthesis-string
50,Pow(x, n),30.3%,Medium,1.5210797012418373, https://leetcode.com/problems/powx-n
346,Moving Average from Data Stream,70.9%,Easy,1.5026900216652235, https://leetcode.com/problems/moving-average-from-data-stream
1060,Missing Element in Sorted Array,54.5%,Medium,1.492039418216795, https://leetcode.com/problems/missing-element-in-sorted-array
140,Word Break II,32.6%,Hard,1.4852880807915247, https://leetcode.com/problems/word-break-ii
1027,Longest Arithmetic Sequence,53.4%,Medium,1.4798547592004279, https://leetcode.com/problems/longest-arithmetic-sequence
22,Generate Parentheses,62.7%,Medium,1.4598441417994485, https://leetcode.com/problems/generate-parentheses
128,Longest Consecutive Sequence,45.1%,Hard,1.4545519468166546, https://leetcode.com/problems/longest-consecutive-sequence
622,Design Circular Queue,43.8%,Medium,1.4518172783301968, https://leetcode.com/problems/design-circular-queue
378,Kth Smallest Element in a Sorted Matrix,54.3%,Medium,1.4317632367033721, https://leetcode.com/problems/kth-smallest-element-in-a-sorted-matrix
39,Combination Sum,56.1%,Medium,1.426875569989807, https://leetcode.com/problems/combination-sum
416,Partition Equal Subset Sum,43.7%,Medium,1.4229637980393213, https://leetcode.com/problems/partition-equal-subset-sum
863,All Nodes Distance K in Binary Tree,55.4%,Medium,1.4150558906561048, https://leetcode.com/problems/all-nodes-distance-k-in-binary-tree
111,Minimum Depth of Binary Tree,37.4%,Easy,1.4037433634986387, https://leetcode.com/problems/minimum-depth-of-binary-tree
1197,Minimum Knight Moves,36.1%,Medium,1.3898674725847917, https://leetcode.com/problems/minimum-knight-moves
674,Longest Continuous Increasing Subsequence,45.9%,Easy,1.3856946609519925, https://leetcode.com/problems/longest-continuous-increasing-subsequence
25,Reverse Nodes in k-Group,42.1%,Hard,1.3778549488136094, https://leetcode.com/problems/reverse-nodes-in-k-group
208,Implement Trie (Prefix Tree),49.4%,Medium,1.3771629265283898, https://leetcode.com/problems/implement-trie-prefix-tree
102,Binary Tree Level Order Traversal,54.6%,Medium,1.3765404200221878, https://leetcode.com/problems/binary-tree-level-order-traversal
1004,Max Consecutive Ones III,59.1%,Medium,1.3672799116652639, https://leetcode.com/problems/max-consecutive-ones-iii
489,Robot Room Cleaner,69.7%,Hard,1.3658472844776508, https://leetcode.com/problems/robot-room-cleaner
93,Restore IP Addresses,35.6%,Medium,1.3543524820841455, https://leetcode.com/problems/restore-ip-addresses
212,Word Search II,34.9%,Hard,1.3504762128004113, https://leetcode.com/problems/word-search-ii
18,4Sum,33.7%,Medium,1.3502929904861851, https://leetcode.com/problems/4sum
295,Find Median from Data Stream,44.3%,Hard,1.3266403133417946, https://leetcode.com/problems/find-median-from-data-stream
266,Palindrome Permutation,61.9%,Easy,1.313084238269434, https://leetcode.com/problems/palindrome-permutation
332,Reconstruct Itinerary,36.7%,Medium,1.3122929249487976, https://leetcode.com/problems/reconstruct-itinerary
536,Construct Binary Tree from String,48.3%,Medium,1.3037077701106166, https://leetcode.com/problems/construct-binary-tree-from-string
192,Word Frequency,25.8%,Medium,1.3031749861241555, https://leetcode.com/problems/word-frequency
329,Longest Increasing Path in a Matrix,43.4%,Hard,1.2931319575091604, https://leetcode.com/problems/longest-increasing-path-in-a-matrix
79,Word Search,35.6%,Medium,1.280808879306902, https://leetcode.com/problems/word-search
209,Minimum Size Subarray Sum,38.2%,Medium,1.2775012133091628, https://leetcode.com/problems/minimum-size-subarray-sum
766,Toeplitz Matrix,65.1%,Easy,1.265045117487021, https://leetcode.com/problems/toeplitz-matrix
865,Smallest Subtree with all the Deepest Nodes,60.8%,Medium,1.261481419535249, https://leetcode.com/problems/smallest-subtree-with-all-the-deepest-nodes
334,Increasing Triplet Subsequence,40.0%,Medium,1.2611109832383756, https://leetcode.com/problems/increasing-triplet-subsequence
642,Design Search Autocomplete System,44.7%,Hard,1.2503871061280754, https://leetcode.com/problems/design-search-autocomplete-system
490,The Maze,51.4%,Medium,1.2425403427106805, https://leetcode.com/problems/the-maze
319,Bulb Switcher,45.4%,Medium,1.2396908869280152, https://leetcode.com/problems/bulb-switcher
452,Minimum Number of Arrows to Burst Balloons,49.6%,Medium,1.230615463551699, https://leetcode.com/problems/minimum-number-of-arrows-to-burst-balloons
117,Populating Next Right Pointers in Each Node II,39.1%,Medium,1.2262318152453044, https://leetcode.com/problems/populating-next-right-pointers-in-each-node-ii
123,Best Time to Buy and Sell Stock III,37.5%,Hard,1.2181973153830872, https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iii
403,Frog Jump,39.7%,Hard,1.2150082096651413, https://leetcode.com/problems/frog-jump
122,Best Time to Buy and Sell Stock II,57.0%,Easy,1.211854964772075, https://leetcode.com/problems/best-time-to-buy-and-sell-stock-ii
240,Search a 2D Matrix II,43.2%,Medium,1.2033065500777145, https://leetcode.com/problems/search-a-2d-matrix-ii
1123,Lowest Common Ancestor of Deepest Leaves,66.8%,Medium,1.1969940730786561, https://leetcode.com/problems/lowest-common-ancestor-of-deepest-leaves
28,Implement strStr(),34.5%,Easy,1.1865561075710946, https://leetcode.com/problems/implement-strstr
529,Minesweeper,59.1%,Medium,1.1685097282854882, https://leetcode.com/problems/minesweeper
347,Top K Frequent Elements,61.2%,Medium,1.1643255952406535, https://leetcode.com/problems/top-k-frequent-elements
692,Top K Frequent Words,51.8%,Medium,1.15697846163365, https://leetcode.com/problems/top-k-frequent-words
885,Spiral Matrix III,69.4%,Medium,1.1535711729488671, https://leetcode.com/problems/spiral-matrix-iii
695,Max Area of Island,62.7%,Medium,1.1498364243710308, https://leetcode.com/problems/max-area-of-island
399,Evaluate Division,51.6%,Medium,1.149791421288312, https://leetcode.com/problems/evaluate-division
73,Set Matrix Zeroes,43.1%,Medium,1.149283542861197, https://leetcode.com/problems/set-matrix-zeroes
92,Reverse Linked List II,38.8%,Medium,1.1166183153068636, https://leetcode.com/problems/reverse-linked-list-ii
116,Populating Next Right Pointers in Each Node,45.2%,Medium,1.100206500790656, https://leetcode.com/problems/populating-next-right-pointers-in-each-node
568,Maximum Vacation Days,40.8%,Hard,1.094922247580656, https://leetcode.com/problems/maximum-vacation-days
480,Sliding Window Median,37.2%,Hard,1.0748911879980227, https://leetcode.com/problems/sliding-window-median
207,Course Schedule,43.1%,Medium,1.0620388108009178, https://leetcode.com/problems/course-schedule
62,Unique Paths,54.1%,Medium,1.048269275172236, https://leetcode.com/problems/unique-paths
81,Search in Rotated Sorted Array II,33.0%,Medium,1.0428016537891152, https://leetcode.com/problems/search-in-rotated-sorted-array-ii
166,Fraction to Recurring Decimal,21.6%,Medium,1.042800072024958, https://leetcode.com/problems/fraction-to-recurring-decimal
540,Single Element in a Sorted Array,57.9%,Medium,1.011865403635058, https://leetcode.com/problems/single-element-in-a-sorted-array
548,Split Array with Equal Sum,46.4%,Medium,1.0048321509441844, https://leetcode.com/problems/split-array-with-equal-sum
54,Spiral Matrix,34.1%,Medium,0.9909089466876733, https://leetcode.com/problems/spiral-matrix
616,Add Bold Tag in String,43.1%,Medium,0.9877689061222668, https://leetcode.com/problems/add-bold-tag-in-string
694,Number of Distinct Islands,56.0%,Medium,0.968250470804866, https://leetcode.com/problems/number-of-distinct-islands
11,Container With Most Water,50.8%,Medium,0.9652015914688283, https://leetcode.com/problems/container-with-most-water
691,Stickers to Spell Word,42.9%,Hard,0.964462275547521, https://leetcode.com/problems/stickers-to-spell-word
235,Lowest Common Ancestor of a Binary Search Tree,49.9%,Easy,0.9620904161254789, https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree
30,Substring with Concatenation of All Words,25.4%,Hard,0.959762453796152, https://leetcode.com/problems/substring-with-concatenation-of-all-words
400,Nth Digit,31.7%,Medium,0.9555114450274365, https://leetcode.com/problems/nth-digit
428,Serialize and Deserialize N-ary Tree,59.4%,Hard,0.9486721413771949, https://leetcode.com/problems/serialize-and-deserialize-n-ary-tree
333,Largest BST Subtree,35.8%,Medium,0.9400316341694208, https://leetcode.com/problems/largest-bst-subtree
934,Shortest Bridge,48.2%,Medium,0.9368313068095433, https://leetcode.com/problems/shortest-bridge
844,Backspace String Compare,46.4%,Easy,0.9264088620397397, https://leetcode.com/problems/backspace-string-compare
24,Swap Nodes in Pairs,50.4%,Medium,0.9160722651972566, https://leetcode.com/problems/swap-nodes-in-pairs
99,Recover Binary Search Tree,39.7%,Hard,0.914769996949273, https://leetcode.com/problems/recover-binary-search-tree
549,Binary Tree Longest Consecutive Sequence II,47.0%,Medium,0.9061007409684052, https://leetcode.com/problems/binary-tree-longest-consecutive-sequence-ii
1026,Maximum Difference Between Node and Ancestor,66.0%,Medium,0.9030048951625053, https://leetcode.com/problems/maximum-difference-between-node-and-ancestor
296,Best Meeting Point,57.5%,Hard,0.8977217646713296, https://leetcode.com/problems/best-meeting-point
1113,Reported Posts,64.1%,Easy,0.8873031950009028, https://leetcode.com/problems/reported-posts
90,Subsets II,47.1%,Medium,0.8707949916540203, https://leetcode.com/problems/subsets-ii
935,Knight Dialer,45.2%,Medium,0.8649974374866045, https://leetcode.com/problems/knight-dialer
68,Text Justification,27.7%,Hard,0.8643702353409353, https://leetcode.com/problems/text-justification
298,Binary Tree Longest Consecutive Sequence,47.1%,Medium,0.8602012652231115, https://leetcode.com/problems/binary-tree-longest-consecutive-sequence
364,Nested List Weight Sum II,62.8%,Medium,0.8557675934060812, https://leetcode.com/problems/nested-list-weight-sum-ii
74,Search a 2D Matrix,36.5%,Medium,0.8550441428611075, https://leetcode.com/problems/search-a-2d-matrix
280,Wiggle Sort,63.8%,Medium,0.8539645517453929, https://leetcode.com/problems/wiggle-sort
85,Maximal Rectangle,37.7%,Hard,0.851125616256968, https://leetcode.com/problems/maximal-rectangle
554,Brick Wall,50.0%,Medium,0.8487112881843506, https://leetcode.com/problems/brick-wall
72,Edit Distance,44.8%,Hard,0.8465064934394285, https://leetcode.com/problems/edit-distance
37,Sudoku Solver,43.6%,Hard,0.8450632225857873, https://leetcode.com/problems/sudoku-solver
163,Missing Ranges,24.3%,Medium,0.8439308538392993, https://leetcode.com/problems/missing-ranges
387,First Unique Character in a String,53.4%,Easy,0.8261344910474214, https://leetcode.com/problems/first-unique-character-in-a-string
129,Sum Root to Leaf Numbers,49.1%,Medium,0.8250747236024935, https://leetcode.com/problems/sum-root-to-leaf-numbers
145,Binary Tree Postorder Traversal,55.0%,Hard,0.8218702184282537, https://leetcode.com/problems/binary-tree-postorder-traversal
1216,Valid Palindrome III,47.8%,Hard,0.8187244879431477, https://leetcode.com/problems/valid-palindrome-iii
977,Squares of a Sorted Array,72.1%,Easy,0.8167611365271219, https://leetcode.com/problems/squares-of-a-sorted-array
148,Sort List,42.3%,Medium,0.8074813963689672, https://leetcode.com/problems/sort-list
405,Convert a Number to Hexadecimal,43.9%,Easy,0.8060996223222796, https://leetcode.com/problems/convert-a-number-to-hexadecimal
639,Decode Ways II,26.6%,Hard,0.803408960173863, https://leetcode.com/problems/decode-ways-ii
69,Sqrt(x),33.9%,Easy,0.8015083049747098, https://leetcode.com/problems/sqrtx
94,Binary Tree Inorder Traversal,63.3%,Medium,0.7944581703541944, https://leetcode.com/problems/binary-tree-inorder-traversal
84,Largest Rectangle in Histogram,35.2%,Hard,0.7909657228834762, https://leetcode.com/problems/largest-rectangle-in-histogram
939,Minimum Area Rectangle,51.8%,Medium,0.7758696575905972, https://leetcode.com/problems/minimum-area-rectangle
272,Closest Binary Search Tree Value II,50.5%,Hard,0.7668348963511045, https://leetcode.com/problems/closest-binary-search-tree-value-ii
839,Similar String Groups,38.6%,Hard,0.761200643804961, https://leetcode.com/problems/similar-string-groups
963,Minimum Area Rectangle II,50.9%,Medium,0.7566953924986649, https://leetcode.com/problems/minimum-area-rectangle-ii
614,Second Degree Follower,30.3%,Medium,0.7343230947441319, https://leetcode.com/problems/second-degree-follower
26,Remove Duplicates from Sorted Array,45.1%,Easy,0.7317263179888092, https://leetcode.com/problems/remove-duplicates-from-sorted-array
430,Flatten a Multilevel Doubly Linked List,55.1%,Medium,0.7229221667439826, https://leetcode.com/problems/flatten-a-multilevel-doubly-linked-list
395,Longest Substring with At Least K Repeating Characters,41.4%,Medium,0.7110726187557327, https://leetcode.com/problems/longest-substring-with-at-least-k-repeating-characters
291,Word Pattern II,43.4%,Hard,0.705886206337375, https://leetcode.com/problems/word-pattern-ii
1094,Car Pooling,56.7%,Medium,0.7053672918947206, https://leetcode.com/problems/car-pooling
191,Number of 1 Bits,49.8%,Easy,0.6891075301794113, https://leetcode.com/problems/number-of-1-bits
322,Coin Change,35.5%,Medium,0.6780940077875448, https://leetcode.com/problems/coin-change
556,Next Greater Element III,31.7%,Medium,0.6780639383486168, https://leetcode.com/problems/next-greater-element-iii
323,Number of Connected Components in an Undirected Graph,56.0%,Medium,0.6754476034605444, https://leetcode.com/problems/number-of-connected-components-in-an-undirected-graph
363,Max Sum of Rectangle No Larger Than K,37.3%,Hard,0.663876798259832, https://leetcode.com/problems/max-sum-of-rectangle-no-larger-than-k
242,Valid Anagram,56.9%,Easy,0.6609451753639594, https://leetcode.com/problems/valid-anagram
41,First Missing Positive,32.0%,Hard,0.6555459946274417, https://leetcode.com/problems/first-missing-positive
445,Add Two Numbers II,54.5%,Medium,0.639958398824261, https://leetcode.com/problems/add-two-numbers-ii
724,Find Pivot Index,44.0%,Easy,0.6379558192352488, https://leetcode.com/problems/find-pivot-index
1269,Number of Ways to Stay in the Same Place After Some Steps,43.2%,Hard,0.6050854936323582, https://leetcode.com/problems/number-of-ways-to-stay-in-the-same-place-after-some-steps
152,Maximum Product Subarray,31.7%,Medium,0.5918273884045084, https://leetcode.com/problems/maximum-product-subarray
518,Coin Change 2,50.2%,Medium,0.5915614413251872, https://leetcode.com/problems/coin-change-2
137,Single Number II,52.4%,Medium,0.5915614413251872, https://leetcode.com/problems/single-number-ii
969,Pancake Sorting,67.5%,Medium,0.5905780135393897, https://leetcode.com/problems/pancake-sorting
36,Valid Sudoku,48.7%,Medium,0.589525373843642, https://leetcode.com/problems/valid-sudoku
160,Intersection of Two Linked Lists,40.6%,Easy,0.5696899885961959, https://leetcode.com/problems/intersection-of-two-linked-lists
637,Average of Levels in Binary Tree,63.1%,Easy,0.5608230187584083, https://leetcode.com/problems/average-of-levels-in-binary-tree
875,Koko Eating Bananas,52.1%,Medium,0.5548950868004853, https://leetcode.com/problems/koko-eating-bananas
19,Remove Nth Node From End of List,35.2%,Medium,0.5540320786995547, https://leetcode.com/problems/remove-nth-node-from-end-of-list
742,Closest Leaf in a Binary Tree,43.6%,Medium,0.5486958978214005, https://leetcode.com/problems/closest-leaf-in-a-binary-tree
214,Shortest Palindrome,29.8%,Hard,0.5331825308672672, https://leetcode.com/problems/shortest-palindrome
47,Permutations II,46.4%,Medium,0.5319853456599372, https://leetcode.com/problems/permutations-ii
45,Jump Game II,30.6%,Hard,0.5265290156944407, https://leetcode.com/problems/jump-game-ii
248,Strobogrammatic Number III,39.6%,Hard,0.5138062519041285, https://leetcode.com/problems/strobogrammatic-number-iii
55,Jump Game,34.6%,Medium,0.5103723488469963, https://leetcode.com/problems/jump-game
1242,Web Crawler Multithreaded,45.9%,Medium,0.4978384282391795, https://leetcode.com/problems/web-crawler-multithreaded
284,Peeking Iterator,45.7%,Medium,0.4945806415816577, https://leetcode.com/problems/peeking-iterator
316,Remove Duplicate Letters,35.8%,Hard,0.48610209879675464, https://leetcode.com/problems/remove-duplicate-letters
101,Symmetric Tree,46.8%,Easy,0.4835048270478799, https://leetcode.com/problems/symmetric-tree
12,Integer to Roman,55.1%,Medium,0.4818758905029877, https://leetcode.com/problems/integer-to-roman
40,Combination Sum II,48.2%,Medium,0.4799396659783134, https://leetcode.com/problems/combination-sum-ii
388,Longest Absolute File Path,41.8%,Medium,0.4754236967150748, https://leetcode.com/problems/longest-absolute-file-path
352,Data Stream as Disjoint Intervals,47.3%,Hard,0.47516062535545167, https://leetcode.com/problems/data-stream-as-disjoint-intervals
14,Longest Common Prefix,35.4%,Easy,0.47383141489567654, https://leetcode.com/problems/longest-common-prefix
1142,User Activity for the Past 30 Days II,34.5%,Easy,0.46937947443508493, https://leetcode.com/problems/user-activity-for-the-past-30-days-ii
66,Plus One,43.0%,Easy,0.4671814837705357, https://leetcode.com/problems/plus-one
443,String Compression,41.3%,Easy,0.4648256809530135, https://leetcode.com/problems/string-compression
1132,Reported Posts II,34.4%,Medium,0.4643731505984498, https://leetcode.com/problems/reported-posts-ii
153,Find Minimum in Rotated Sorted Array,45.1%,Medium,0.4624492968139545, https://leetcode.com/problems/find-minimum-in-rotated-sorted-array
515,Find Largest Value in Each Tree Row,61.1%,Medium,0.4594054982539122, https://leetcode.com/problems/find-largest-value-in-each-tree-row
1213,Intersection of Three Sorted Arrays,78.9%,Easy,0.45778473187961194, https://leetcode.com/problems/intersection-of-three-sorted-arrays
223,Rectangle Area,37.8%,Medium,0.4551885434605949, https://leetcode.com/problems/rectangle-area
1008,Construct Binary Search Tree from Preorder Traversal,78.4%,Medium,0.44664069296978226, https://leetcode.com/problems/construct-binary-search-tree-from-preorder-traversal
63,Unique Paths II,34.6%,Medium,0.4447194776965593, https://leetcode.com/problems/unique-paths-ii
108,Convert Sorted Array to Binary Search Tree,57.9%,Easy,0.4427274468005625, https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree
564,Find the Closest Palindrome,19.7%,Hard,0.43712242797885603, https://leetcode.com/problems/find-the-closest-palindrome
491,Increasing Subsequences,46.1%,Medium,0.4337197757657639, https://leetcode.com/problems/increasing-subsequences
189,Rotate Array,34.7%,Easy,0.42789160115933317, https://leetcode.com/problems/rotate-array
77,Combinations,54.7%,Medium,0.42763619580710505, https://leetcode.com/problems/combinations
1233,Remove Sub-Folders from the Filesystem,59.5%,Medium,0.4243747624654565, https://leetcode.com/problems/remove-sub-folders-from-the-filesystem
437,Path Sum III,47.2%,Medium,0.41578386430953973, https://leetcode.com/problems/path-sum-iii
392,Is Subsequence,49.2%,Easy,0.4144786135549692, https://leetcode.com/problems/is-subsequence
48,Rotate Image,56.7%,Medium,0.41267616798758366, https://leetcode.com/problems/rotate-image
151,Reverse Words in a String,21.9%,Medium,0.40449012406685037, https://leetcode.com/problems/reverse-words-in-a-string
776,Split BST,55.8%,Medium,0.4013413909243023, https://leetcode.com/problems/split-bst
1264,Page Recommendations,67.6%,Medium,0.39931124253378614, https://leetcode.com/problems/page-recommendations
688,Knight Probability in Chessboard,48.9%,Medium,0.38977851194046487, https://leetcode.com/problems/knight-probability-in-chessboard
1424,Diagonal Traverse II,42.4%,Medium,0.3873430652104741, https://leetcode.com/problems/diagonal-traverse-ii
136,Single Number,65.5%,Easy,0.3708919589097458, https://leetcode.com/problems/single-number
7,Reverse Integer,25.8%,Easy,0.36989351258944636, https://leetcode.com/problems/reverse-integer
167,Two Sum II - Input array is sorted,54.1%,Easy,0.3697194122572466, https://leetcode.com/problems/two-sum-ii-input-array-is-sorted
547,Friend Circles,58.6%,Medium,0.36668313802455266, https://leetcode.com/problems/friend-circles
407,Trapping Rain Water II,42.4%,Hard,0.36621163438550147, https://leetcode.com/problems/trapping-rain-water-ii
150,Evaluate Reverse Polish Notation,36.3%,Medium,0.3580974192852753, https://leetcode.com/problems/evaluate-reverse-polish-notation
1032,Stream of Characters,48.3%,Hard,0.35736199308977074, https://leetcode.com/problems/stream-of-characters
345,Reverse Vowels of a String,44.2%,Easy,0.35407324785389366, https://leetcode.com/problems/reverse-vowels-of-a-string
703,Kth Largest Element in a Stream,49.7%,Easy,0.35302939867863786, https://leetcode.com/problems/kth-largest-element-in-a-stream
442,Find All Duplicates in an Array,67.8%,Medium,0.35261504015383743, https://leetcode.com/problems/find-all-duplicates-in-an-array
862,Shortest Subarray with Sum at Least K,24.6%,Hard,0.34470650089593724, https://leetcode.com/problems/shortest-subarray-with-sum-at-least-k
855,Exam Room,43.1%,Medium,0.34442921752179523, https://leetcode.com/problems/exam-room
303,Range Sum Query - Immutable,44.7%,Easy,0.33875458272156067, https://leetcode.com/problems/range-sum-query-immutable
435,Non-overlapping Intervals,42.9%,Medium,0.33492740097938434, https://leetcode.com/problems/non-overlapping-intervals
110,Balanced Binary Tree,43.5%,Easy,0.3341019099698985, https://leetcode.com/problems/balanced-binary-tree
1091,Shortest Path in Binary Matrix,38.2%,Medium,0.3320988840413624, https://leetcode.com/problems/shortest-path-in-binary-matrix
228,Summary Ranges,39.5%,Medium,0.33141882056106853, https://leetcode.com/problems/summary-ranges
827,Making A Large Island,45.7%,Hard,0.32879599515977564, https://leetcode.com/problems/making-a-large-island
794,Valid Tic-Tac-Toe State,32.6%,Medium,0.32676342249425205, https://leetcode.com/problems/valid-tic-tac-toe-state
384,Shuffle an Array,52.8%,Medium,0.3251022057535279, https://leetcode.com/problems/shuffle-an-array
852,Peak Index in a Mountain Array,71.6%,Easy,0.3250696045234013, https://leetcode.com/problems/peak-index-in-a-mountain-array
918,Maximum Sum Circular Subarray,33.7%,Medium,0.31591744682247913, https://leetcode.com/problems/maximum-sum-circular-subarray
16,3Sum Closest,46.0%,Medium,0.3149279072827814, https://leetcode.com/problems/3sum-closest
104,Maximum Depth of Binary Tree,66.0%,Easy,0.31423184738371324, https://leetcode.com/problems/maximum-depth-of-binary-tree
686,Repeated String Match,32.3%,Easy,0.3117796240308414, https://leetcode.com/problems/repeated-string-match
478,Generate Random Point in a Circle,38.5%,Medium,0.30854721091574266, https://leetcode.com/problems/generate-random-point-in-a-circle
324,Wiggle Sort II,29.9%,Medium,0.30770093934227283, https://leetcode.com/problems/wiggle-sort-ii
112,Path Sum,41.2%,Easy,0.3008609933382415, https://leetcode.com/problems/path-sum
1245,Tree Diameter,60.1%,Medium,0.29849298855599654, https://leetcode.com/problems/tree-diameter
936,Stamping The Sequence,42.8%,Hard,0.2972515234679316, https://leetcode.com/problems/stamping-the-sequence
641,Design Circular Deque,52.7%,Medium,0.29571424414904524, https://leetcode.com/problems/design-circular-deque
155,Min Stack,44.5%,Easy,0.29559427979545205, https://leetcode.com/problems/min-stack
171,Excel Sheet Column Number,55.9%,Easy,0.2930854047798333, https://leetcode.com/problems/excel-sheet-column-number
377,Combination Sum IV,45.3%,Medium,0.2908416327421494, https://leetcode.com/problems/combination-sum-iv
60,Permutation Sequence,38.4%,Hard,0.28587071214283233, https://leetcode.com/problems/permutation-sequence
662,Maximum Width of Binary Tree,41.0%,Medium,0.2838096534681729, https://leetcode.com/problems/maximum-width-of-binary-tree
382,Linked List Random Node,52.1%,Medium,0.2802157173642045, https://leetcode.com/problems/linked-list-random-node
730,Count Different Palindromic Subsequences,41.8%,Hard,0.2744368457017603, https://leetcode.com/problems/count-different-palindromic-subsequences
414,Third Maximum Number,30.5%,Easy,0.2737911401418798, https://leetcode.com/problems/third-maximum-number
759,Employee Free Time,66.3%,Hard,0.27104379818721386, https://leetcode.com/problems/employee-free-time
983,Minimum Cost For Tickets,60.5%,Medium,0.26701398643191887, https://leetcode.com/problems/minimum-cost-for-tickets
450,Delete Node in a BST,43.1%,Medium,0.2618604317292985, https://leetcode.com/problems/delete-node-in-a-bst
210,Course Schedule II,40.7%,Medium,0.26122098917206793, https://leetcode.com/problems/course-schedule-ii
505,The Maze II,47.7%,Medium,0.2590886081881086, https://leetcode.com/problems/the-maze-ii
663,Equal Tree Partition,39.5%,Medium,0.2578291093020998, https://leetcode.com/problems/equal-tree-partition
234,Palindrome Linked List,39.3%,Easy,0.25526989045710297, https://leetcode.com/problems/palindrome-linked-list
446,Arithmetic Slices II - Subsequence,32.7%,Hard,0.25416851512733507, https://leetcode.com/problems/arithmetic-slices-ii-subsequence
609,Find Duplicate File in System,59.5%,Medium,0.25388017696233983, https://leetcode.com/problems/find-duplicate-file-in-system
168,Excel Sheet Column Title,31.1%,Easy,0.24683273722531368, https://leetcode.com/problems/excel-sheet-column-title
307,Range Sum Query - Mutable,34.6%,Medium,0.24328779711400658, https://leetcode.com/problems/range-sum-query-mutable
716,Max Stack,42.6%,Easy,0.24108416003009112, https://leetcode.com/problems/max-stack
188,Best Time to Buy and Sell Stock IV,28.0%,Hard,0.2362134701793093, https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iv
655,Print Binary Tree,55.0%,Medium,0.23545681154756673, https://leetcode.com/problems/print-binary-tree
344,Reverse String,68.5%,Easy,0.23528503471044915, https://leetcode.com/problems/reverse-string
654,Maximum Binary Tree,79.9%,Medium,0.2271957154126144, https://leetcode.com/problems/maximum-binary-tree
221,Maximal Square,37.7%,Medium,0.2218511119038007, https://leetcode.com/problems/maximal-square
159,Longest Substring with At Most Two Distinct Characters,49.4%,Medium,0.22148929121818325, https://leetcode.com/problems/longest-substring-with-at-most-two-distinct-characters
241,Different Ways to Add Parentheses,55.2%,Medium,0.22096511694444815, https://leetcode.com/problems/different-ways-to-add-parentheses
750,Number Of Corner Rectangles,66.4%,Medium,0.22067136216882066, https://leetcode.com/problems/number-of-corner-rectangles
516,Longest Palindromic Subsequence,53.2%,Medium,0.2156692799855616, https://leetcode.com/problems/longest-palindromic-subsequence
417,Pacific Atlantic Water Flow,41.1%,Medium,0.2125614419836728, https://leetcode.com/problems/pacific-atlantic-water-flow
669,Trim a Binary Search Tree,63.0%,Easy,0.21245865121419338, https://leetcode.com/problems/trim-a-binary-search-tree
410,Split Array Largest Sum,44.5%,Hard,0.2113090936672069, https://leetcode.com/problems/split-array-largest-sum
261,Graph Valid Tree,42.2%,Medium,0.21068350715947268, https://leetcode.com/problems/graph-valid-tree
6,ZigZag Conversion,36.3%,Medium,0.21040551802808702, https://leetcode.com/problems/zigzag-conversion
503,Next Greater Element II,56.5%,Medium,0.20963047971710957, https://leetcode.com/problems/next-greater-element-ii
312,Burst Balloons,51.8%,Hard,0.20921375502735295, https://leetcode.com/problems/burst-balloons
1053,Previous Permutation With One Swap,48.5%,Medium,0.20909179785855941, https://leetcode.com/problems/previous-permutation-with-one-swap
315,Count of Smaller Numbers After Self,41.5%,Hard,0.20806843787404064, https://leetcode.com/problems/count-of-smaller-numbers-after-self
884,Uncommon Words from Two Sentences,63.3%,Easy,0.2078703916939076, https://leetcode.com/problems/uncommon-words-from-two-sentences
290,Word Pattern,37.0%,Easy,0.20496634325524304, https://leetcode.com/problems/word-pattern
371,Sum of Two Integers,50.7%,Medium,0.20426967106919308, https://leetcode.com/problems/sum-of-two-integers
752,Open the Lock,51.8%,Medium,0.20214045265154648, https://leetcode.com/problems/open-the-lock
578,Get Highest Answer Rate Question,39.3%,Medium,0.20157261209600713, https://leetcode.com/problems/get-highest-answer-rate-question
714,Best Time to Buy and Sell Stock with Transaction Fee,54.7%,Medium,0.19966567025192705, https://leetcode.com/problems/best-time-to-buy-and-sell-stock-with-transaction-fee
886,Possible Bipartition,44.2%,Medium,0.19624555983340192, https://leetcode.com/problems/possible-bipartition
496,Next Greater Element I,63.8%,Easy,0.19278708883361578, https://leetcode.com/problems/next-greater-element-i
178,Rank Scores,45.8%,Medium,0.18843907402659216, https://leetcode.com/problems/rank-scores
681,Next Closest Time,45.0%,Medium,0.18812615225992188, https://leetcode.com/problems/next-closest-time
103,Binary Tree Zigzag Level Order Traversal,48.3%,Medium,0.18805467423313033, https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal
981,Time Based Key-Value Store,53.1%,Medium,0.1844764271644963, https://leetcode.com/problems/time-based-key-value-store
889,Construct Binary Tree from Preorder and Postorder Traversal,66.2%,Medium,0.18315872720701828, https://leetcode.com/problems/construct-binary-tree-from-preorder-and-postorder-traversal
593,Valid Square,43.1%,Medium,0.181905842799192, https://leetcode.com/problems/valid-square
916,Word Subsets,47.8%,Medium,0.181583821607415, https://leetcode.com/problems/word-subsets
9,Palindrome Number,48.4%,Easy,0.17791287714642806, https://leetcode.com/problems/palindrome-number
130,Surrounded Regions,28.1%,Medium,0.17613332483584074, https://leetcode.com/problems/surrounded-regions
328,Odd Even Linked List,55.7%,Medium,0.17548836529558792, https://leetcode.com/problems/odd-even-linked-list
843,Guess the Word,46.1%,Hard,0.17062551703076334, https://leetcode.com/problems/guess-the-word
413,Arithmetic Slices,57.9%,Medium,0.1657221570563033, https://leetcode.com/problems/arithmetic-slices
535,Encode and Decode TinyURL,79.9%,Medium,0.15827628732919474, https://leetcode.com/problems/encode-and-decode-tinyurl
106,Construct Binary Tree from Inorder and Postorder Traversal,47.2%,Medium,0.1563992524301298, https://leetcode.com/problems/construct-binary-tree-from-inorder-and-postorder-traversal
373,Find K Pairs with Smallest Sums,36.7%,Medium,0.15386549516826, https://leetcode.com/problems/find-k-pairs-with-smallest-sums
676,Implement Magic Dictionary,54.5%,Medium,0.15104025741286586, https://leetcode.com/problems/implement-magic-dictionary
723,Candy Crush,69.2%,Medium,0.1475667107409061, https://leetcode.com/problems/candy-crush
113,Path Sum II,46.7%,Medium,0.14611171121171676, https://leetcode.com/problems/path-sum-ii
95,Unique Binary Search Trees II,40.6%,Medium,0.14236392393156927, https://leetcode.com/problems/unique-binary-search-trees-ii
172,Factorial Trailing Zeroes,37.8%,Easy,0.14144572792198667, https://leetcode.com/problems/factorial-trailing-zeroes
176,Second Highest Salary,31.6%,Easy,0.1400039071301401, https://leetcode.com/problems/second-highest-salary
250,Count Univalue Subtrees,52.0%,Medium,0.13767409129953323, https://leetcode.com/problems/count-univalue-subtrees
1209,Remove All Adjacent Duplicates in String II,56.9%,Medium,0.13712574822724946, https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string-ii
1043,Partition Array for Maximum Sum,65.2%,Medium,0.13636827395972229, https://leetcode.com/problems/partition-array-for-maximum-sum
204,Count Primes,31.5%,Easy,0.13428518935681233, https://leetcode.com/problems/count-primes
100,Same Tree,53.4%,Easy,0.1318171127859705, https://leetcode.com/problems/same-tree
226,Invert Binary Tree,65.0%,Easy,0.12934562157317617, https://leetcode.com/problems/invert-binary-tree
274,H-Index,36.1%,Medium,0.12827809724117692, https://leetcode.com/problems/h-index
338,Counting Bits,69.5%,Medium,0.12580669538551648, https://leetcode.com/problems/counting-bits
461,Hamming Distance,72.8%,Easy,0.12570469475928556, https://leetcode.com/problems/hamming-distance
1146,Snapshot Array,37.0%,Medium,0.12154546954921416, https://leetcode.com/problems/snapshot-array
572,Subtree of Another Tree,44.1%,Easy,0.12110558833260582, https://leetcode.com/problems/subtree-of-another-tree
222,Count Complete Tree Nodes,46.8%,Medium,0.119584908524332, https://leetcode.com/problems/count-complete-tree-nodes
848,Shifting Letters,44.6%,Medium,0.11918851726511835, https://leetcode.com/problems/shifting-letters
1439,Find the Kth Smallest Sum of a Matrix With Sorted Rows,59.5%,Hard,0.11918851726511835, https://leetcode.com/problems/find-the-kth-smallest-sum-of-a-matrix-with-sorted-rows
179,Largest Number,28.8%,Medium,0.11836460008103292, https://leetcode.com/problems/largest-number
525,Contiguous Array,42.8%,Medium,0.11750591219610916, https://leetcode.com/problems/contiguous-array
268,Missing Number,51.7%,Easy,0.11538834636572094, https://leetcode.com/problems/missing-number
1275,Find Winner on a Tic Tac Toe Game,52.8%,Easy,0.11536465479210183, https://leetcode.com/problems/find-winner-on-a-tic-tac-toe-game
61,Rotate List,30.0%,Medium,0.11528615545779625, https://leetcode.com/problems/rotate-list
1047,Remove All Adjacent Duplicates In String,68.6%,Easy,0.11181352460393465, https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string
265,Paint House II,44.6%,Hard,0.1088028598487991, https://leetcode.com/problems/paint-house-ii
792,Number of Matching Subsequences,47.4%,Medium,0.10867135530512761, https://leetcode.com/problems/number-of-matching-subsequences
181,Employees Earning More Than Their Managers,56.9%,Easy,0.10821358464023274, https://leetcode.com/problems/employees-earning-more-than-their-managers
279,Perfect Squares,47.4%,Medium,0.10744168186165087, https://leetcode.com/problems/perfect-squares
966,Vowel Spellchecker,47.2%,Medium,0.10676797542570607, https://leetcode.com/problems/vowel-spellchecker
70,Climbing Stairs,47.8%,Easy,0.10352088064831867, https://leetcode.com/problems/climbing-stairs
773,Sliding Puzzle,59.3%,Hard,0.10294796925244239, https://leetcode.com/problems/sliding-puzzle
118,Pascal's Triangle,52.5%,Easy,0.10288539275725785, https://leetcode.com/problems/pascals-triangle
1379,Find a Corresponding Node of a Binary Tree in a Clone of That Tree,83.8%,Medium,0.10186917331721722, https://leetcode.com/problems/find-a-corresponding-node-of-a-binary-tree-in-a-clone-of-that-tree
1411,Number of Ways to Paint N × 3 Grid,61.1%,Hard,0.10135249426028749, https://leetcode.com/problems/number-of-ways-to-paint-n-3-grid
402,Remove K Digits,28.4%,Medium,0.10101435005393304, https://leetcode.com/problems/remove-k-digits
141,Linked List Cycle,41.1%,Easy,0.10063328674952829, https://leetcode.com/problems/linked-list-cycle
628,Maximum Product of Three Numbers,47.1%,Easy,0.09909090264423091, https://leetcode.com/problems/maximum-product-of-three-numbers
1141,User Activity for the Past 30 Days I,54.1%,Easy,0.09646026618756222, https://leetcode.com/problems/user-activity-for-the-past-30-days-i
59,Spiral Matrix II,53.9%,Medium,0.09483978737982436, https://leetcode.com/problems/spiral-matrix-ii
821,Shortest Distance to a Character,66.9%,Easy,0.09450889771017068, https://leetcode.com/problems/shortest-distance-to-a-character
1062,Longest Repeating Substring,57.2%,Medium,0.09201889872025212, https://leetcode.com/problems/longest-repeating-substring
1077,Project Employees III,75.6%,Medium,0.0907652093142671, https://leetcode.com/problems/project-employees-iii
1241,Number of Comments per Post,67.0%,Easy,0.0891458495182624, https://leetcode.com/problems/number-of-comments-per-post
652,Find Duplicate Subtrees,50.2%,Medium,0.08907963005368878, https://leetcode.com/problems/find-duplicate-subtrees
995,Minimum Number of K Consecutive Bit Flips,46.8%,Hard,0.08894748601649616, https://leetcode.com/problems/minimum-number-of-k-consecutive-bit-flips
788,Rotated Digits,57.1%,Easy,0.08743429938967429, https://leetcode.com/problems/rotated-digits
1108,Defanging an IP Address,87.5%,Easy,0.08632116644802212, https://leetcode.com/problems/defanging-an-ip-address
287,Find the Duplicate Number,55.5%,Medium,0.0845834791494423, https://leetcode.com/problems/find-the-duplicate-number
1019,Next Greater Node In Linked List,57.4%,Medium,0.08373089291046797, https://leetcode.com/problems/next-greater-node-in-linked-list
550,Game Play Analysis IV,45.3%,Medium,0.08286311601350513, https://leetcode.com/problems/game-play-analysis-iv
962,Maximum Width Ramp,45.4%,Medium,0.08184524810424337, https://leetcode.com/problems/maximum-width-ramp
698,Partition to K Equal Sum Subsets,45.0%,Medium,0.08184524810424337, https://leetcode.com/problems/partition-to-k-equal-sum-subsets
887,Super Egg Drop,27.1%,Hard,0.08054440988796595, https://leetcode.com/problems/super-egg-drop
673,Number of Longest Increasing Subsequence,35.7%,Medium,0.08025695513016742, https://leetcode.com/problems/number-of-longest-increasing-subsequence
1003,Check If Word Is Valid After Substitutions,55.3%,Medium,0.07847161544149522, https://leetcode.com/problems/check-if-word-is-valid-after-substitutions
1254,Number of Closed Islands,60.5%,Medium,0.07796154146971186, https://leetcode.com/problems/number-of-closed-islands
1055,Shortest Way to Form String,56.9%,Medium,0.07681317776161672, https://leetcode.com/problems/shortest-way-to-form-string
778,Swim in Rising Water,53.1%,Hard,0.07651914983419623, https://leetcode.com/problems/swim-in-rising-water
229,Majority Element II,35.6%,Medium,0.0741423287407419, https://leetcode.com/problems/majority-element-ii
787,Cheapest Flights Within K Stops,39.3%,Medium,0.0732592918006526, https://leetcode.com/problems/cheapest-flights-within-k-stops
1287,Element Appearing More Than 25% In Sorted Array,60.2%,Easy,0.07284773254143415, https://leetcode.com/problems/element-appearing-more-than-25-in-sorted-array
1057,Campus Bikes,57.7%,Medium,0.07107786641655695, https://leetcode.com/problems/campus-bikes
289,Game of Life,54.5%,Medium,0.06756473699960104, https://leetcode.com/problems/game-of-life
997,Find the Town Judge,50.1%,Easy,0.06548984513511495, https://leetcode.com/problems/find-the-town-judge
726,Number of Atoms,49.0%,Hard,0.06371581438610768, https://leetcode.com/problems/number-of-atoms
509,Fibonacci Number,67.2%,Easy,0.06227154155782137, https://leetcode.com/problems/fibonacci-number
472,Concatenated Words,43.7%,Hard,0.06120196522807572, https://leetcode.com/problems/concatenated-words
353,Design Snake Game,34.2%,Medium,0.06053284922884233, https://leetcode.com/problems/design-snake-game
1445,Apples & Oranges,87.1%,Medium,0.05954139369101661, https://leetcode.com/problems/apples-oranges
217,Contains Duplicate,56.0%,Easy,0.05910139227591337, https://leetcode.com/problems/contains-duplicate
1305,All Elements in Two Binary Search Trees,76.1%,Medium,0.05819353408024827, https://leetcode.com/problems/all-elements-in-two-binary-search-trees
979,Distribute Coins in Binary Tree,68.9%,Medium,0.05800594958851697, https://leetcode.com/problems/distribute-coins-in-binary-tree
83,Remove Duplicates from Sorted List,45.4%,Easy,0.055776537457411894, https://leetcode.com/problems/remove-duplicates-from-sorted-list
653,Two Sum IV - Input is a BST,55.5%,Easy,0.055724721838100025, https://leetcode.com/problems/two-sum-iv-input-is-a-bst
202,Happy Number,50.4%,Easy,0.05503451923624455, https://leetcode.com/problems/happy-number
310,Minimum Height Trees,32.3%,Medium,0.05423015406086025, https://leetcode.com/problems/minimum-height-trees
679,24 Game,46.4%,Hard,0.05341723749698583, https://leetcode.com/problems/24-game
203,Remove Linked List Elements,38.6%,Easy,0.04798700179553833, https://leetcode.com/problems/remove-linked-list-elements
205,Isomorphic Strings,39.8%,Easy,0.045397866271290506, https://leetcode.com/problems/isomorphic-strings
733,Flood Fill,55.3%,Easy,0.04413292021115189, https://leetcode.com/problems/flood-fill
1498,Number of Subsequences That Satisfy the Given Sum Condition,36.7%,Medium,0.04334372921647208, https://leetcode.com/problems/number-of-subsequences-that-satisfy-the-given-sum-condition
611,Valid Triangle Number,48.4%,Medium,0.04255961441879593, https://leetcode.com/problems/valid-triangle-number
1219,Path with Maximum Gold,65.1%,Medium,0.04111576039097048, https://leetcode.com/problems/path-with-maximum-gold
260,Single Number III,64.3%,Medium,0.0403019568058018, https://leetcode.com/problems/single-number-iii
739,Daily Temperatures,63.3%,Medium,0.03954060923825168, https://leetcode.com/problems/daily-temperatures
406,Queue Reconstruction by Height,66.9%,Medium,0.03949613834265583, https://leetcode.com/problems/queue-reconstruction-by-height
706,Design HashMap,61.3%,Easy,0.039016652342451774, https://leetcode.com/problems/design-hashmap
872,Leaf-Similar Trees,64.5%,Easy,0.03899974309382511, https://leetcode.com/problems/leaf-similar-trees
993,Cousins in Binary Tree,52.0%,Easy,0.03876454345024432, https://leetcode.com/problems/cousins-in-binary-tree
337,House Robber III,50.6%,Medium,0.03825370795946937, https://leetcode.com/problems/house-robber-iii
905,Sort Array By Parity,74.1%,Easy,0.03787434929243582, https://leetcode.com/problems/sort-array-by-parity
1031,Maximum Sum of Two Non-Overlapping Subarrays,57.9%,Medium,0.03711000965123125, https://leetcode.com/problems/maximum-sum-of-two-non-overlapping-subarrays
646,Maximum Length of Pair Chain,51.9%,Medium,0.036870535808327706, https://leetcode.com/problems/maximum-length-of-pair-chain
376,Wiggle Subsequence,39.6%,Medium,0.03666771919188123, https://leetcode.com/problems/wiggle-subsequence
96,Unique Binary Search Trees,52.9%,Medium,0.036467121912812143, https://leetcode.com/problems/unique-binary-search-trees
701,Insert into a Binary Search Tree,77.7%,Medium,0.03459222693591465, https://leetcode.com/problems/insert-into-a-binary-search-tree
309,Best Time to Buy and Sell Stock with Cooldown,47.4%,Medium,0.034362822747185016, https://leetcode.com/problems/best-time-to-buy-and-sell-stock-with-cooldown
1360,Number of Days Between Two Dates,48.8%,Easy,0.03401688527825427, https://leetcode.com/problems/number-of-days-between-two-dates
154,Find Minimum in Rotated Sorted Array II,41.6%,Hard,0.033505725418712703, https://leetcode.com/problems/find-minimum-in-rotated-sorted-array-ii
80,Remove Duplicates from Sorted Array II,44.0%,Medium,0.03303052567648182, https://leetcode.com/problems/remove-duplicates-from-sorted-array-ii
832,Flipping an Image,76.2%,Easy,0.03267078228954871, https://leetcode.com/problems/flipping-an-image
605,Can Place Flowers,31.6%,Easy,0.02457126073050533, https://leetcode.com/problems/can-place-flowers
64,Minimum Path Sum,54.5%,Medium,0.024287775531756203, https://leetcode.com/problems/minimum-path-sum
1137,N-th Tribonacci Number,55.9%,Easy,0.02072613051711693, https://leetcode.com/problems/n-th-tribonacci-number
237,Delete Node in a Linked List,63.8%,Easy,0.020421896704473325, https://leetcode.com/problems/delete-node-in-a-linked-list
1266,Minimum Time Visiting All Points,79.6%,Easy,0.017354014693151613, https://leetcode.com/problems/minimum-time-visiting-all-points
1021,Remove Outermost Parentheses,78.0%,Easy,0.016434223613379935, https://leetcode.com/problems/remove-outermost-parentheses
771,Jewels and Stones,86.4%,Easy,0.01631653312373806, https://leetcode.com/problems/jewels-and-stones
1304,Find N Unique Integers Sum up to Zero,76.3%,Easy,0.015892269319508656, https://leetcode.com/problems/find-n-unique-integers-sum-up-to-zero
404,Sum of Left Leaves,50.9%,Easy,0.013981353230340547, https://leetcode.com/problems/sum-of-left-leaves
451,Sort Characters By Frequency,63.0%,Medium,0.013153757558740521, https://leetcode.com/problems/sort-characters-by-frequency
1143,Longest Common Subsequence,58.4%,Medium,0.008835931134362285, https://leetcode.com/problems/longest-common-subsequence
763,Partition Labels,76.1%,Medium,0.008385793376274025, https://leetcode.com/problems/partition-labels
1528,Shuffle String,86.1%,Easy,0.006295047716793515, https://leetcode.com/problems/shuffle-string
275,H-Index II,36.0%,Medium,0, https://leetcode.com/problems/h-index-ii
745,Prefix and Suffix Search,34.1%,Hard,0, https://leetcode.com/problems/prefix-and-suffix-search
764,Largest Plus Sign,46.0%,Medium,0, https://leetcode.com/problems/largest-plus-sign
784,Letter Case Permutation,64.6%,Medium,0, https://leetcode.com/problems/letter-case-permutation
801,Minimum Swaps To Make Sequences Increasing,38.9%,Medium,0, https://leetcode.com/problems/minimum-swaps-to-make-sequences-increasing
893,Groups of Special-Equivalent Strings,66.5%,Easy,0, https://leetcode.com/problems/groups-of-special-equivalent-strings
968,Binary Tree Cameras,37.5%,Hard,0, https://leetcode.com/problems/binary-tree-cameras
989,Add to Array-Form of Integer,44.2%,Easy,0, https://leetcode.com/problems/add-to-array-form-of-integer
998,Maximum Binary Tree II,63.0%,Medium,0, https://leetcode.com/problems/maximum-binary-tree-ii
1033,Moving Stones Until Consecutive,41.7%,Easy,0, https://leetcode.com/problems/moving-stones-until-consecutive
1040,Moving Stones Until Consecutive II,52.9%,Medium,0, https://leetcode.com/problems/moving-stones-until-consecutive-ii
1075,Project Employees I,64.8%,Easy,0, https://leetcode.com/problems/project-employees-i
1076,Project Employees II,53.7%,Easy,0, https://leetcode.com/problems/project-employees-ii
1361,Validate Binary Tree Nodes,48.5%,Medium,0, https://leetcode.com/problems/validate-binary-tree-nodes
1211,Queries Quality and Percentage,68.3%,Easy,0, https://leetcode.com/problems/queries-quality-and-percentage
1225,Report Contiguous Dates,61.1%,Hard,0, https://leetcode.com/problems/report-contiguous-dates
1236,Web Crawler,64.3%,Medium,0, https://leetcode.com/problems/web-crawler
1322,Ads Performance,57.8%,Easy,0, https://leetcode.com/problems/ads-performance
1357,Apply Discount Every n Orders,66.0%,Medium,0, https://leetcode.com/problems/apply-discount-every-n-orders
1398,Customers Who Bought Products A and B but Not C,80.7%,Medium,0, https://leetcode.com/problems/customers-who-bought-products-a-and-b-but-not-c
1443,Minimum Time to Collect All Apples in a Tree,55.4%,Medium,0, https://leetcode.com/problems/minimum-time-to-collect-all-apples-in-a-tree
1460,Make Two Arrays Equal by Reversing Sub-arrays,73.9%,Easy,0, https://leetcode.com/problems/make-two-arrays-equal-by-reversing-sub-arrays
1453,Maximum Number of Darts Inside of a Circular Dartboard,33.7%,Hard,0, https://leetcode.com/problems/maximum-number-of-darts-inside-of-a-circular-dartboard
1522,Diameter of N-Ary Tree,70.0%,Medium,0, https://leetcode.com/problems/diameter-of-n-ary-tree
1 301 Remove Invalid Parentheses 43.3% Hard 5.575610066775206 https://leetcode.com/problems/remove-invalid-parentheses
2 273 Integer to English Words 27.1% Hard 5.444753025333917 https://leetcode.com/problems/integer-to-english-words
3 953 Verifying an Alien Dictionary 54.1% Easy 5.313895983892627 https://leetcode.com/problems/verifying-an-alien-dictionary
4 158 Read N Characters Given Read4 II - Call multiple times 33.8% Hard 5.183038942451338 https://leetcode.com/problems/read-n-characters-given-read4-ii-call-multiple-times
5 297 Serialize and Deserialize Binary Tree 47.5% Hard 5.090902981800583 https://leetcode.com/problems/serialize-and-deserialize-binary-tree
6 10 Regular Expression Matching 26.8% Hard 4.960045940359294 https://leetcode.com/problems/regular-expression-matching
7 91 Decode Ways 24.7% Medium 4.926071339059624 https://leetcode.com/problems/decode-ways
8 253 Meeting Rooms II 45.7% Medium 4.890863444823654 https://leetcode.com/problems/meeting-rooms-ii
9 238 Product of Array Except Self 60.1% Medium 4.787304832474671 https://leetcode.com/problems/product-of-array-except-self
10 680 Valid Palindrome II 36.6% Easy 4.727432294246022 https://leetcode.com/problems/valid-palindrome-ii
11 15 3Sum 26.8% Medium 4.716880252749641 https://leetcode.com/problems/3sum
12 560 Subarray Sum Equals K 43.9% Medium 4.681694359055468 https://leetcode.com/problems/subarray-sum-equals-k
13 278 First Bad Version 35.7% Easy 4.667124795676079 https://leetcode.com/problems/first-bad-version
14 76 Minimum Window Substring 34.6% Hard 4.624844309488783 https://leetcode.com/problems/minimum-window-substring
15 973 K Closest Points to Origin 63.8% Medium 4.6226837423062355 https://leetcode.com/problems/k-closest-points-to-origin
16 67 Add Binary 45.2% Easy 4.59057803547337 https://leetcode.com/problems/add-binary
17 23 Merge k Sorted Lists 40.2% Hard 4.540902119231776 https://leetcode.com/problems/merge-k-sorted-lists
18 283 Move Zeroes 57.8% Easy 4.539910062491303 https://leetcode.com/problems/move-zeroes
19 1249 Minimum Remove to Make Valid Parentheses 62.5% Medium 4.510651510608414 https://leetcode.com/problems/minimum-remove-to-make-valid-parentheses
20 125 Valid Palindrome 36.7% Easy 4.472291401117124 https://leetcode.com/problems/valid-palindrome
21 29 Divide Two Integers 16.4% Medium 4.451722795491452 https://leetcode.com/problems/divide-two-integers
22 31 Next Permutation 32.6% Medium 4.413309355076113 https://leetcode.com/problems/next-permutation
23 173 Binary Search Tree Iterator 56.6% Medium 4.402058148743651 https://leetcode.com/problems/binary-search-tree-iterator
24 282 Expression Add Operators 35.5% Hard 4.392818642206004 https://leetcode.com/problems/expression-add-operators
25 211 Add and Search Word - Data structure design 38.1% Medium 4.32373689930886 https://leetcode.com/problems/add-and-search-word-data-structure-design
26 65 Valid Number 15.3% Hard 4.274687734189391 https://leetcode.com/problems/valid-number
27 157 Read N Characters Given Read4 34.2% Easy 4.211806122562663 https://leetcode.com/problems/read-n-characters-given-read4
28 124 Binary Tree Maximum Path Sum 34.3% Hard 4.173080791636589 https://leetcode.com/problems/binary-tree-maximum-path-sum
29 314 Binary Tree Vertical Order Traversal 45.3% Medium 4.169848738461142 https://leetcode.com/problems/binary-tree-vertical-order-traversal
30 17 Letter Combinations of a Phone Number 46.8% Medium 4.164730824697368 https://leetcode.com/problems/letter-combinations-of-a-phone-number
31 56 Merge Intervals 39.3% Medium 4.104801117510305 https://leetcode.com/problems/merge-intervals
32 426 Convert Binary Search Tree to Sorted Doubly Linked List 59.1% Medium 4.095652308198605 https://leetcode.com/problems/convert-binary-search-tree-to-sorted-doubly-linked-list
33 269 Alien Dictionary 33.3% Hard 4.0805624877290665 https://leetcode.com/problems/alien-dictionary
34 1 Two Sum 45.6% Easy 4.011510827995362 https://leetcode.com/problems/two-sum
35 133 Clone Graph 34.8% Medium 3.9966560335245793 https://leetcode.com/problems/clone-graph
36 325 Maximum Size Subarray Sum Equals k 46.8% Medium 3.9738002945104958 https://leetcode.com/problems/maximum-size-subarray-sum-equals-k
37 438 Find All Anagrams in a String 43.3% Medium 3.9600414146616707 https://leetcode.com/problems/find-all-anagrams-in-a-string
38 311 Sparse Matrix Multiplication 61.9% Medium 3.8291843732203814 https://leetcode.com/problems/sparse-matrix-multiplication
39 415 Add Strings 47.5% Easy 3.823224938890351 https://leetcode.com/problems/add-strings
40 200 Number of Islands 46.8% Medium 3.8178638361422226 https://leetcode.com/problems/number-of-islands
41 336 Palindrome Pairs 33.7% Hard 3.774867877530413 https://leetcode.com/problems/palindrome-pairs
42 215 Kth Largest Element in an Array 55.4% Medium 3.7586134025612274 https://leetcode.com/problems/kth-largest-element-in-an-array
43 543 Diameter of Binary Tree 48.4% Easy 3.7178469184757565 https://leetcode.com/problems/diameter-of-binary-tree
44 257 Binary Tree Paths 51.5% Easy 3.692630656645929 https://leetcode.com/problems/binary-tree-paths
45 523 Continuous Subarray Sum 24.6% Medium 3.6834633730887782 https://leetcode.com/problems/continuous-subarray-sum
46 277 Find the Celebrity 41.8% Medium 3.616681579302239 https://leetcode.com/problems/find-the-celebrity
47 621 Task Scheduler 50.1% Medium 3.6045478094509233 https://leetcode.com/problems/task-scheduler
48 43 Multiply Strings 33.9% Medium 3.5921750861240196 https://leetcode.com/problems/multiply-strings
49 98 Validate Binary Search Tree 27.8% Medium 3.581806727833732 https://leetcode.com/problems/validate-binary-search-tree
50 42 Trapping Rain Water 48.9% Hard 3.5778834321997866 https://leetcode.com/problems/trapping-rain-water
51 689 Maximum Sum of 3 Non-Overlapping Subarrays 46.3% Hard 3.5588948279750623 https://leetcode.com/problems/maximum-sum-of-3-non-overlapping-subarrays
52 349 Intersection of Two Arrays 62.5% Easy 3.498653100218706 https://leetcode.com/problems/intersection-of-two-arrays
53 340 Longest Substring with At Most K Distinct Characters 44.1% Hard 3.455560352078738 https://leetcode.com/problems/longest-substring-with-at-most-k-distinct-characters
54 121 Best Time to Buy and Sell Stock 50.5% Easy 3.423204938390614 https://leetcode.com/problems/best-time-to-buy-and-sell-stock
55 88 Merge Sorted Array 39.4% Easy 3.421005187994902 https://leetcode.com/problems/merge-sorted-array
56 114 Flatten Binary Tree to Linked List 49.3% Medium 3.3920934149388993 https://leetcode.com/problems/flatten-binary-tree-to-linked-list
57 138 Copy List with Random Pointer 36.4% Medium 3.3873161764915185 https://leetcode.com/problems/copy-list-with-random-pointer
58 636 Exclusive Time of Functions 51.9% Medium 3.3832963809646075 https://leetcode.com/problems/exclusive-time-of-functions
59 721 Accounts Merge 48.8% Medium 3.3545947466566406 https://leetcode.com/problems/accounts-merge
60 161 One Edit Distance 32.3% Medium 3.353178877168441 https://leetcode.com/problems/one-edit-distance
61 146 LRU Cache 33.2% Medium 3.347163586386296 https://leetcode.com/problems/lru-cache
62 304 Range Sum Query 2D - Immutable 38.6% Medium 3.333446415469864 https://leetcode.com/problems/range-sum-query-2d-immutable
63 199 Binary Tree Right Side View 54.1% Medium 3.304270095581444 https://leetcode.com/problems/binary-tree-right-side-view
64 139 Word Break 40.1% Medium 3.2929683383994965 https://leetcode.com/problems/word-break
65 785 Is Graph Bipartite? 47.5% Medium 3.2902637558626 https://leetcode.com/problems/is-graph-bipartite
66 33 Search in Rotated Sorted Array 34.5% Medium 3.1594067144213107 https://leetcode.com/problems/search-in-rotated-sorted-array
67 317 Shortest Distance from All Buildings 41.4% Hard 3.1476976438713056 https://leetcode.com/problems/shortest-distance-from-all-buildings
68 143 Reorder List 37.1% Medium 3.0702582463605563 https://leetcode.com/problems/reorder-list
69 71 Simplify Path 32.6% Medium 3.0484180406242536 https://leetcode.com/problems/simplify-path
70 236 Lowest Common Ancestor of a Binary Tree 45.7% Medium 3.0428333907886373 https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree
71 286 Walls and Gates 54.5% Medium 3.0338274496253073 https://leetcode.com/problems/walls-and-gates
72 986 Interval List Intersections 67.3% Medium 3.0089200665434412 https://leetcode.com/problems/interval-list-intersections
73 34 Find First and Last Position of Element in Sorted Array 36.2% Medium 2.98689800584703 https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array
74 341 Flatten Nested List Iterator 52.9% Medium 2.8560409644057407 https://leetcode.com/problems/flatten-nested-list-iterator
75 896 Monotonic Array 57.9% Easy 2.8395358910441173 https://leetcode.com/problems/monotonic-array
76 398 Random Pick Index 56.0% Medium 2.8139239778761542 https://leetcode.com/problems/random-pick-index
77 20 Valid Parentheses 39.0% Easy 2.8025626605638214 https://leetcode.com/problems/valid-parentheses
78 227 Basic Calculator II 36.9% Medium 2.7631872114373093 https://leetcode.com/problems/basic-calculator-ii
79 57 Insert Interval 33.5% Hard 2.7331319297198133 https://leetcode.com/problems/insert-interval
80 270 Closest Binary Search Tree Value 48.5% Easy 2.6434272396312797 https://leetcode.com/problems/closest-binary-search-tree-value
81 350 Intersection of Two Arrays II 51.4% Easy 2.6433299851110665 https://leetcode.com/problems/intersection-of-two-arrays-ii
82 360 Sort Transformed Array 48.8% Medium 2.5159168865305603 https://leetcode.com/problems/sort-transformed-array
83 825 Friends Of Appropriate Ages 42.7% Medium 2.5148820184509786 https://leetcode.com/problems/friends-of-appropriate-ages
84 358 Rearrange String k Distance Apart 34.9% Hard 2.5060004328478 https://leetcode.com/problems/rearrange-string-k-distance-apart
85 32 Longest Valid Parentheses 28.4% Hard 2.5024857812383545 https://leetcode.com/problems/longest-valid-parentheses
86 78 Subsets 62.0% Medium 2.499447442601738 https://leetcode.com/problems/subsets
87 247 Strobogrammatic Number II 47.6% Medium 2.4817551197053462 https://leetcode.com/problems/strobogrammatic-number-ii
88 348 Design Tic-Tac-Toe 54.3% Medium 2.468847008770655 https://leetcode.com/problems/design-tic-tac-toe
89 708 Insert into a Sorted Circular Linked List 31.6% Medium 2.4286015114138553 https://leetcode.com/problems/insert-into-a-sorted-circular-linked-list
90 339 Nested List Weight Sum 74.0% Easy 2.4235186826029427 https://leetcode.com/problems/nested-list-weight-sum
91 51 N-Queens 46.6% Hard 2.3533410529606655 https://leetcode.com/problems/n-queens
92 824 Goat Latin 63.4% Easy 2.335791734454864 https://leetcode.com/problems/goat-latin
93 300 Longest Increasing Subsequence 42.6% Medium 2.311623040070363 https://leetcode.com/problems/longest-increasing-subsequence
94 246 Strobogrammatic Number 45.0% Easy 2.3033292329266852 https://leetcode.com/problems/strobogrammatic-number
95 75 Sort Colors 47.3% Medium 2.26383073754557 https://leetcode.com/problems/sort-colors
96 670 Maximum Swap 43.6% Medium 2.243417413534214 https://leetcode.com/problems/maximum-swap
97 958 Check Completeness of a Binary Tree 52.1% Medium 2.2371220522106188 https://leetcode.com/problems/check-completeness-of-a-binary-tree
98 380 Insert Delete GetRandom O(1) 47.5% Medium 2.2300170531752253 https://leetcode.com/problems/insert-delete-getrandom-o1
99 285 Inorder Successor in BST 40.4% Medium 2.2141456653587395 https://leetcode.com/problems/inorder-successor-in-bst
100 463 Island Perimeter 65.7% Easy 2.1989334578253232 https://leetcode.com/problems/island-perimeter
101 938 Range Sum of BST 81.3% Easy 2.18562625585131 https://leetcode.com/problems/range-sum-of-bst
102 987 Vertical Order Traversal of a Binary Tree 36.6% Medium 2.1846999517750083 https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree
103 224 Basic Calculator 36.8% Hard 2.157363357784235 https://leetcode.com/problems/basic-calculator
104 126 Word Ladder II 22.1% Hard 2.155302887907243 https://leetcode.com/problems/word-ladder-ii
105 109 Convert Sorted List to Binary Search Tree 47.7% Medium 2.12389330425067 https://leetcode.com/problems/convert-sorted-list-to-binary-search-tree
106 528 Random Pick with Weight 43.9% Medium 2.108026094329404 https://leetcode.com/problems/random-pick-with-weight
107 53 Maximum Subarray 46.5% Easy 2.1007977216847413 https://leetcode.com/problems/maximum-subarray
108 162 Find Peak Element 43.3% Medium 2.097923147793266 https://leetcode.com/problems/find-peak-element
109 449 Serialize and Deserialize BST 52.0% Medium 2.0739609058750252 https://leetcode.com/problems/serialize-and-deserialize-bst
110 252 Meeting Rooms 54.6% Easy 2.0566920989085755 https://leetcode.com/problems/meeting-rooms
111 3 Longest Substring Without Repeating Characters 30.4% Medium 2.0517637291630937 https://leetcode.com/problems/longest-substring-without-repeating-characters
112 498 Diagonal Traverse 48.2% Medium 2.043242115882686 https://leetcode.com/problems/diagonal-traverse
113 597 Friend Requests I: Overall Acceptance Rate 41.0% Easy 2.027359179427378 https://leetcode.com/problems/friend-requests-i-overall-acceptance-rate
114 13 Roman to Integer 55.7% Easy 2.01479997556304 https://leetcode.com/problems/roman-to-integer
115 251 Flatten 2D Vector 45.7% Medium 1.9729845608202703 https://leetcode.com/problems/flatten-2d-vector
116 5 Longest Palindromic Substring 29.5% Medium 1.9699539495822616 https://leetcode.com/problems/longest-palindromic-substring
117 127 Word Ladder 29.6% Medium 1.9658429548852365 https://leetcode.com/problems/word-ladder
118 1428 Leftmost Column with at Least a One 46.8% Medium 1.9587705311106522 https://leetcode.com/problems/leftmost-column-with-at-least-a-one
119 791 Custom Sort String 65.7% Medium 1.9502755018573026 https://leetcode.com/problems/custom-sort-string
120 419 Battleships in a Board 70.0% Medium 1.9320451089181416 https://leetcode.com/problems/battleships-in-a-board
121 494 Target Sum 46.3% Medium 1.9292457672677412 https://leetcode.com/problems/target-sum
122 239 Sliding Window Maximum 43.0% Hard 1.9141431781910356 https://leetcode.com/problems/sliding-window-maximum
123 772 Basic Calculator III 41.3% Hard 1.83961549040569 https://leetcode.com/problems/basic-calculator-iii
124 8 String to Integer (atoi) 15.4% Medium 1.8248495500300532 https://leetcode.com/problems/string-to-integer-atoi
125 305 Number of Islands II 40.1% Hard 1.7943361261547834 https://leetcode.com/problems/number-of-islands-ii
126 2 Add Two Numbers 33.9% Medium 1.7797160813383437 https://leetcode.com/problems/add-two-numbers
127 767 Reorganize String 48.7% Medium 1.763473840984625 https://leetcode.com/problems/reorganize-string
128 632 Smallest Range Covering Elements from K Lists 52.4% Hard 1.7399831997043351 https://leetcode.com/problems/smallest-range-covering-elements-from-k-lists
129 381 Insert Delete GetRandom O(1) - Duplicates allowed 34.1% Hard 1.735473057934797 https://leetcode.com/problems/insert-delete-getrandom-o1-duplicates-allowed
130 206 Reverse Linked List 62.5% Easy 1.7296971379749975 https://leetcode.com/problems/reverse-linked-list
131 602 Friend Requests II: Who Has the Most Friends 53.4% Medium 1.7191182434527041 https://leetcode.com/problems/friend-requests-ii-who-has-the-most-friends
132 393 UTF-8 Validation 37.5% Medium 1.7125378103037587 https://leetcode.com/problems/utf-8-validation
133 44 Wildcard Matching 24.7% Hard 1.6993713125769454 https://leetcode.com/problems/wildcard-matching
134 249 Group Shifted Strings 55.1% Medium 1.681514431400676 https://leetcode.com/problems/group-shifted-strings
135 308 Range Sum Query 2D - Mutable 35.6% Hard 1.6796421711073488 https://leetcode.com/problems/range-sum-query-2d-mutable
136 567 Permutation in String 44.4% Medium 1.6775468592381628 https://leetcode.com/problems/permutation-in-string
137 46 Permutations 63.5% Medium 1.6727146787726128 https://leetcode.com/problems/permutations
138 49 Group Anagrams 56.9% Medium 1.6634098456962998 https://leetcode.com/problems/group-anagrams
139 921 Minimum Add to Make Parentheses Valid 73.7% Medium 1.657222079227145 https://leetcode.com/problems/minimum-add-to-make-parentheses-valid
140 394 Decode String 50.0% Medium 1.639247462442617 https://leetcode.com/problems/decode-string
141 218 The Skyline Problem 34.6% Hard 1.6158688027643908 https://leetcode.com/problems/the-skyline-problem
142 658 Find K Closest Elements 40.9% Medium 1.6142837737005458 https://leetcode.com/problems/find-k-closest-elements
143 432 All O`one Data Structure 32.4% Hard 1.6115746653838356 https://leetcode.com/problems/all-oone-data-structure
144 477 Total Hamming Distance 50.4% Medium 1.6077790787664574 https://leetcode.com/problems/total-hamming-distance
145 647 Palindromic Substrings 60.6% Medium 1.604512052240803 https://leetcode.com/problems/palindromic-substrings
146 408 Valid Word Abbreviation 30.6% Easy 1.591893602783191 https://leetcode.com/problems/valid-word-abbreviation
147 4 Median of Two Sorted Arrays 29.6% Hard 1.5846309908488054 https://leetcode.com/problems/median-of-two-sorted-arrays
148 468 Validate IP Address 24.1% Medium 1.582769665351939 https://leetcode.com/problems/validate-ip-address
149 105 Construct Binary Tree from Preorder and Inorder Traversal 48.8% Medium 1.5718267400182278 https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal
150 38 Count and Say 44.6% Easy 1.569507967682265 https://leetcode.com/problems/count-and-say
151 21 Merge Two Sorted Lists 53.5% Easy 1.54824799568769 https://leetcode.com/problems/merge-two-sorted-lists
152 230 Kth Smallest Element in a BST 60.2% Medium 1.53927525756437 https://leetcode.com/problems/kth-smallest-element-in-a-bst
153 678 Valid Parenthesis String 31.0% Medium 1.5238562476062738 https://leetcode.com/problems/valid-parenthesis-string
154 50 Pow(x n) 30.3% Medium 1.5210797012418373 https://leetcode.com/problems/powx-n
155 346 Moving Average from Data Stream 70.9% Easy 1.5026900216652235 https://leetcode.com/problems/moving-average-from-data-stream
156 1060 Missing Element in Sorted Array 54.5% Medium 1.492039418216795 https://leetcode.com/problems/missing-element-in-sorted-array
157 140 Word Break II 32.6% Hard 1.4852880807915247 https://leetcode.com/problems/word-break-ii
158 1027 Longest Arithmetic Sequence 53.4% Medium 1.4798547592004279 https://leetcode.com/problems/longest-arithmetic-sequence
159 22 Generate Parentheses 62.7% Medium 1.4598441417994485 https://leetcode.com/problems/generate-parentheses
160 128 Longest Consecutive Sequence 45.1% Hard 1.4545519468166546 https://leetcode.com/problems/longest-consecutive-sequence
161 622 Design Circular Queue 43.8% Medium 1.4518172783301968 https://leetcode.com/problems/design-circular-queue
162 378 Kth Smallest Element in a Sorted Matrix 54.3% Medium 1.4317632367033721 https://leetcode.com/problems/kth-smallest-element-in-a-sorted-matrix
163 39 Combination Sum 56.1% Medium 1.426875569989807 https://leetcode.com/problems/combination-sum
164 416 Partition Equal Subset Sum 43.7% Medium 1.4229637980393213 https://leetcode.com/problems/partition-equal-subset-sum
165 863 All Nodes Distance K in Binary Tree 55.4% Medium 1.4150558906561048 https://leetcode.com/problems/all-nodes-distance-k-in-binary-tree
166 111 Minimum Depth of Binary Tree 37.4% Easy 1.4037433634986387 https://leetcode.com/problems/minimum-depth-of-binary-tree
167 1197 Minimum Knight Moves 36.1% Medium 1.3898674725847917 https://leetcode.com/problems/minimum-knight-moves
168 674 Longest Continuous Increasing Subsequence 45.9% Easy 1.3856946609519925 https://leetcode.com/problems/longest-continuous-increasing-subsequence
169 25 Reverse Nodes in k-Group 42.1% Hard 1.3778549488136094 https://leetcode.com/problems/reverse-nodes-in-k-group
170 208 Implement Trie (Prefix Tree) 49.4% Medium 1.3771629265283898 https://leetcode.com/problems/implement-trie-prefix-tree
171 102 Binary Tree Level Order Traversal 54.6% Medium 1.3765404200221878 https://leetcode.com/problems/binary-tree-level-order-traversal
172 1004 Max Consecutive Ones III 59.1% Medium 1.3672799116652639 https://leetcode.com/problems/max-consecutive-ones-iii
173 489 Robot Room Cleaner 69.7% Hard 1.3658472844776508 https://leetcode.com/problems/robot-room-cleaner
174 93 Restore IP Addresses 35.6% Medium 1.3543524820841455 https://leetcode.com/problems/restore-ip-addresses
175 212 Word Search II 34.9% Hard 1.3504762128004113 https://leetcode.com/problems/word-search-ii
176 18 4Sum 33.7% Medium 1.3502929904861851 https://leetcode.com/problems/4sum
177 295 Find Median from Data Stream 44.3% Hard 1.3266403133417946 https://leetcode.com/problems/find-median-from-data-stream
178 266 Palindrome Permutation 61.9% Easy 1.313084238269434 https://leetcode.com/problems/palindrome-permutation
179 332 Reconstruct Itinerary 36.7% Medium 1.3122929249487976 https://leetcode.com/problems/reconstruct-itinerary
180 536 Construct Binary Tree from String 48.3% Medium 1.3037077701106166 https://leetcode.com/problems/construct-binary-tree-from-string
181 192 Word Frequency 25.8% Medium 1.3031749861241555 https://leetcode.com/problems/word-frequency
182 329 Longest Increasing Path in a Matrix 43.4% Hard 1.2931319575091604 https://leetcode.com/problems/longest-increasing-path-in-a-matrix
183 79 Word Search 35.6% Medium 1.280808879306902 https://leetcode.com/problems/word-search
184 209 Minimum Size Subarray Sum 38.2% Medium 1.2775012133091628 https://leetcode.com/problems/minimum-size-subarray-sum
185 766 Toeplitz Matrix 65.1% Easy 1.265045117487021 https://leetcode.com/problems/toeplitz-matrix
186 865 Smallest Subtree with all the Deepest Nodes 60.8% Medium 1.261481419535249 https://leetcode.com/problems/smallest-subtree-with-all-the-deepest-nodes
187 334 Increasing Triplet Subsequence 40.0% Medium 1.2611109832383756 https://leetcode.com/problems/increasing-triplet-subsequence
188 642 Design Search Autocomplete System 44.7% Hard 1.2503871061280754 https://leetcode.com/problems/design-search-autocomplete-system
189 490 The Maze 51.4% Medium 1.2425403427106805 https://leetcode.com/problems/the-maze
190 319 Bulb Switcher 45.4% Medium 1.2396908869280152 https://leetcode.com/problems/bulb-switcher
191 452 Minimum Number of Arrows to Burst Balloons 49.6% Medium 1.230615463551699 https://leetcode.com/problems/minimum-number-of-arrows-to-burst-balloons
192 117 Populating Next Right Pointers in Each Node II 39.1% Medium 1.2262318152453044 https://leetcode.com/problems/populating-next-right-pointers-in-each-node-ii
193 123 Best Time to Buy and Sell Stock III 37.5% Hard 1.2181973153830872 https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iii
194 403 Frog Jump 39.7% Hard 1.2150082096651413 https://leetcode.com/problems/frog-jump
195 122 Best Time to Buy and Sell Stock II 57.0% Easy 1.211854964772075 https://leetcode.com/problems/best-time-to-buy-and-sell-stock-ii
196 240 Search a 2D Matrix II 43.2% Medium 1.2033065500777145 https://leetcode.com/problems/search-a-2d-matrix-ii
197 1123 Lowest Common Ancestor of Deepest Leaves 66.8% Medium 1.1969940730786561 https://leetcode.com/problems/lowest-common-ancestor-of-deepest-leaves
198 28 Implement strStr() 34.5% Easy 1.1865561075710946 https://leetcode.com/problems/implement-strstr
199 529 Minesweeper 59.1% Medium 1.1685097282854882 https://leetcode.com/problems/minesweeper
200 347 Top K Frequent Elements 61.2% Medium 1.1643255952406535 https://leetcode.com/problems/top-k-frequent-elements
201 692 Top K Frequent Words 51.8% Medium 1.15697846163365 https://leetcode.com/problems/top-k-frequent-words
202 885 Spiral Matrix III 69.4% Medium 1.1535711729488671 https://leetcode.com/problems/spiral-matrix-iii
203 695 Max Area of Island 62.7% Medium 1.1498364243710308 https://leetcode.com/problems/max-area-of-island
204 399 Evaluate Division 51.6% Medium 1.149791421288312 https://leetcode.com/problems/evaluate-division
205 73 Set Matrix Zeroes 43.1% Medium 1.149283542861197 https://leetcode.com/problems/set-matrix-zeroes
206 92 Reverse Linked List II 38.8% Medium 1.1166183153068636 https://leetcode.com/problems/reverse-linked-list-ii
207 116 Populating Next Right Pointers in Each Node 45.2% Medium 1.100206500790656 https://leetcode.com/problems/populating-next-right-pointers-in-each-node
208 568 Maximum Vacation Days 40.8% Hard 1.094922247580656 https://leetcode.com/problems/maximum-vacation-days
209 480 Sliding Window Median 37.2% Hard 1.0748911879980227 https://leetcode.com/problems/sliding-window-median
210 207 Course Schedule 43.1% Medium 1.0620388108009178 https://leetcode.com/problems/course-schedule
211 62 Unique Paths 54.1% Medium 1.048269275172236 https://leetcode.com/problems/unique-paths
212 81 Search in Rotated Sorted Array II 33.0% Medium 1.0428016537891152 https://leetcode.com/problems/search-in-rotated-sorted-array-ii
213 166 Fraction to Recurring Decimal 21.6% Medium 1.042800072024958 https://leetcode.com/problems/fraction-to-recurring-decimal
214 540 Single Element in a Sorted Array 57.9% Medium 1.011865403635058 https://leetcode.com/problems/single-element-in-a-sorted-array
215 548 Split Array with Equal Sum 46.4% Medium 1.0048321509441844 https://leetcode.com/problems/split-array-with-equal-sum
216 54 Spiral Matrix 34.1% Medium 0.9909089466876733 https://leetcode.com/problems/spiral-matrix
217 616 Add Bold Tag in String 43.1% Medium 0.9877689061222668 https://leetcode.com/problems/add-bold-tag-in-string
218 694 Number of Distinct Islands 56.0% Medium 0.968250470804866 https://leetcode.com/problems/number-of-distinct-islands
219 11 Container With Most Water 50.8% Medium 0.9652015914688283 https://leetcode.com/problems/container-with-most-water
220 691 Stickers to Spell Word 42.9% Hard 0.964462275547521 https://leetcode.com/problems/stickers-to-spell-word
221 235 Lowest Common Ancestor of a Binary Search Tree 49.9% Easy 0.9620904161254789 https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree
222 30 Substring with Concatenation of All Words 25.4% Hard 0.959762453796152 https://leetcode.com/problems/substring-with-concatenation-of-all-words
223 400 Nth Digit 31.7% Medium 0.9555114450274365 https://leetcode.com/problems/nth-digit
224 428 Serialize and Deserialize N-ary Tree 59.4% Hard 0.9486721413771949 https://leetcode.com/problems/serialize-and-deserialize-n-ary-tree
225 333 Largest BST Subtree 35.8% Medium 0.9400316341694208 https://leetcode.com/problems/largest-bst-subtree
226 934 Shortest Bridge 48.2% Medium 0.9368313068095433 https://leetcode.com/problems/shortest-bridge
227 844 Backspace String Compare 46.4% Easy 0.9264088620397397 https://leetcode.com/problems/backspace-string-compare
228 24 Swap Nodes in Pairs 50.4% Medium 0.9160722651972566 https://leetcode.com/problems/swap-nodes-in-pairs
229 99 Recover Binary Search Tree 39.7% Hard 0.914769996949273 https://leetcode.com/problems/recover-binary-search-tree
230 549 Binary Tree Longest Consecutive Sequence II 47.0% Medium 0.9061007409684052 https://leetcode.com/problems/binary-tree-longest-consecutive-sequence-ii
231 1026 Maximum Difference Between Node and Ancestor 66.0% Medium 0.9030048951625053 https://leetcode.com/problems/maximum-difference-between-node-and-ancestor
232 296 Best Meeting Point 57.5% Hard 0.8977217646713296 https://leetcode.com/problems/best-meeting-point
233 1113 Reported Posts 64.1% Easy 0.8873031950009028 https://leetcode.com/problems/reported-posts
234 90 Subsets II 47.1% Medium 0.8707949916540203 https://leetcode.com/problems/subsets-ii
235 935 Knight Dialer 45.2% Medium 0.8649974374866045 https://leetcode.com/problems/knight-dialer
236 68 Text Justification 27.7% Hard 0.8643702353409353 https://leetcode.com/problems/text-justification
237 298 Binary Tree Longest Consecutive Sequence 47.1% Medium 0.8602012652231115 https://leetcode.com/problems/binary-tree-longest-consecutive-sequence
238 364 Nested List Weight Sum II 62.8% Medium 0.8557675934060812 https://leetcode.com/problems/nested-list-weight-sum-ii
239 74 Search a 2D Matrix 36.5% Medium 0.8550441428611075 https://leetcode.com/problems/search-a-2d-matrix
240 280 Wiggle Sort 63.8% Medium 0.8539645517453929 https://leetcode.com/problems/wiggle-sort
241 85 Maximal Rectangle 37.7% Hard 0.851125616256968 https://leetcode.com/problems/maximal-rectangle
242 554 Brick Wall 50.0% Medium 0.8487112881843506 https://leetcode.com/problems/brick-wall
243 72 Edit Distance 44.8% Hard 0.8465064934394285 https://leetcode.com/problems/edit-distance
244 37 Sudoku Solver 43.6% Hard 0.8450632225857873 https://leetcode.com/problems/sudoku-solver
245 163 Missing Ranges 24.3% Medium 0.8439308538392993 https://leetcode.com/problems/missing-ranges
246 387 First Unique Character in a String 53.4% Easy 0.8261344910474214 https://leetcode.com/problems/first-unique-character-in-a-string
247 129 Sum Root to Leaf Numbers 49.1% Medium 0.8250747236024935 https://leetcode.com/problems/sum-root-to-leaf-numbers
248 145 Binary Tree Postorder Traversal 55.0% Hard 0.8218702184282537 https://leetcode.com/problems/binary-tree-postorder-traversal
249 1216 Valid Palindrome III 47.8% Hard 0.8187244879431477 https://leetcode.com/problems/valid-palindrome-iii
250 977 Squares of a Sorted Array 72.1% Easy 0.8167611365271219 https://leetcode.com/problems/squares-of-a-sorted-array
251 148 Sort List 42.3% Medium 0.8074813963689672 https://leetcode.com/problems/sort-list
252 405 Convert a Number to Hexadecimal 43.9% Easy 0.8060996223222796 https://leetcode.com/problems/convert-a-number-to-hexadecimal
253 639 Decode Ways II 26.6% Hard 0.803408960173863 https://leetcode.com/problems/decode-ways-ii
254 69 Sqrt(x) 33.9% Easy 0.8015083049747098 https://leetcode.com/problems/sqrtx
255 94 Binary Tree Inorder Traversal 63.3% Medium 0.7944581703541944 https://leetcode.com/problems/binary-tree-inorder-traversal
256 84 Largest Rectangle in Histogram 35.2% Hard 0.7909657228834762 https://leetcode.com/problems/largest-rectangle-in-histogram
257 939 Minimum Area Rectangle 51.8% Medium 0.7758696575905972 https://leetcode.com/problems/minimum-area-rectangle
258 272 Closest Binary Search Tree Value II 50.5% Hard 0.7668348963511045 https://leetcode.com/problems/closest-binary-search-tree-value-ii
259 839 Similar String Groups 38.6% Hard 0.761200643804961 https://leetcode.com/problems/similar-string-groups
260 963 Minimum Area Rectangle II 50.9% Medium 0.7566953924986649 https://leetcode.com/problems/minimum-area-rectangle-ii
261 614 Second Degree Follower 30.3% Medium 0.7343230947441319 https://leetcode.com/problems/second-degree-follower
262 26 Remove Duplicates from Sorted Array 45.1% Easy 0.7317263179888092 https://leetcode.com/problems/remove-duplicates-from-sorted-array
263 430 Flatten a Multilevel Doubly Linked List 55.1% Medium 0.7229221667439826 https://leetcode.com/problems/flatten-a-multilevel-doubly-linked-list
264 395 Longest Substring with At Least K Repeating Characters 41.4% Medium 0.7110726187557327 https://leetcode.com/problems/longest-substring-with-at-least-k-repeating-characters
265 291 Word Pattern II 43.4% Hard 0.705886206337375 https://leetcode.com/problems/word-pattern-ii
266 1094 Car Pooling 56.7% Medium 0.7053672918947206 https://leetcode.com/problems/car-pooling
267 191 Number of 1 Bits 49.8% Easy 0.6891075301794113 https://leetcode.com/problems/number-of-1-bits
268 322 Coin Change 35.5% Medium 0.6780940077875448 https://leetcode.com/problems/coin-change
269 556 Next Greater Element III 31.7% Medium 0.6780639383486168 https://leetcode.com/problems/next-greater-element-iii
270 323 Number of Connected Components in an Undirected Graph 56.0% Medium 0.6754476034605444 https://leetcode.com/problems/number-of-connected-components-in-an-undirected-graph
271 363 Max Sum of Rectangle No Larger Than K 37.3% Hard 0.663876798259832 https://leetcode.com/problems/max-sum-of-rectangle-no-larger-than-k
272 242 Valid Anagram 56.9% Easy 0.6609451753639594 https://leetcode.com/problems/valid-anagram
273 41 First Missing Positive 32.0% Hard 0.6555459946274417 https://leetcode.com/problems/first-missing-positive
274 445 Add Two Numbers II 54.5% Medium 0.639958398824261 https://leetcode.com/problems/add-two-numbers-ii
275 724 Find Pivot Index 44.0% Easy 0.6379558192352488 https://leetcode.com/problems/find-pivot-index
276 1269 Number of Ways to Stay in the Same Place After Some Steps 43.2% Hard 0.6050854936323582 https://leetcode.com/problems/number-of-ways-to-stay-in-the-same-place-after-some-steps
277 152 Maximum Product Subarray 31.7% Medium 0.5918273884045084 https://leetcode.com/problems/maximum-product-subarray
278 518 Coin Change 2 50.2% Medium 0.5915614413251872 https://leetcode.com/problems/coin-change-2
279 137 Single Number II 52.4% Medium 0.5915614413251872 https://leetcode.com/problems/single-number-ii
280 969 Pancake Sorting 67.5% Medium 0.5905780135393897 https://leetcode.com/problems/pancake-sorting
281 36 Valid Sudoku 48.7% Medium 0.589525373843642 https://leetcode.com/problems/valid-sudoku
282 160 Intersection of Two Linked Lists 40.6% Easy 0.5696899885961959 https://leetcode.com/problems/intersection-of-two-linked-lists
283 637 Average of Levels in Binary Tree 63.1% Easy 0.5608230187584083 https://leetcode.com/problems/average-of-levels-in-binary-tree
284 875 Koko Eating Bananas 52.1% Medium 0.5548950868004853 https://leetcode.com/problems/koko-eating-bananas
285 19 Remove Nth Node From End of List 35.2% Medium 0.5540320786995547 https://leetcode.com/problems/remove-nth-node-from-end-of-list
286 742 Closest Leaf in a Binary Tree 43.6% Medium 0.5486958978214005 https://leetcode.com/problems/closest-leaf-in-a-binary-tree
287 214 Shortest Palindrome 29.8% Hard 0.5331825308672672 https://leetcode.com/problems/shortest-palindrome
288 47 Permutations II 46.4% Medium 0.5319853456599372 https://leetcode.com/problems/permutations-ii
289 45 Jump Game II 30.6% Hard 0.5265290156944407 https://leetcode.com/problems/jump-game-ii
290 248 Strobogrammatic Number III 39.6% Hard 0.5138062519041285 https://leetcode.com/problems/strobogrammatic-number-iii
291 55 Jump Game 34.6% Medium 0.5103723488469963 https://leetcode.com/problems/jump-game
292 1242 Web Crawler Multithreaded 45.9% Medium 0.4978384282391795 https://leetcode.com/problems/web-crawler-multithreaded
293 284 Peeking Iterator 45.7% Medium 0.4945806415816577 https://leetcode.com/problems/peeking-iterator
294 316 Remove Duplicate Letters 35.8% Hard 0.48610209879675464 https://leetcode.com/problems/remove-duplicate-letters
295 101 Symmetric Tree 46.8% Easy 0.4835048270478799 https://leetcode.com/problems/symmetric-tree
296 12 Integer to Roman 55.1% Medium 0.4818758905029877 https://leetcode.com/problems/integer-to-roman
297 40 Combination Sum II 48.2% Medium 0.4799396659783134 https://leetcode.com/problems/combination-sum-ii
298 388 Longest Absolute File Path 41.8% Medium 0.4754236967150748 https://leetcode.com/problems/longest-absolute-file-path
299 352 Data Stream as Disjoint Intervals 47.3% Hard 0.47516062535545167 https://leetcode.com/problems/data-stream-as-disjoint-intervals
300 14 Longest Common Prefix 35.4% Easy 0.47383141489567654 https://leetcode.com/problems/longest-common-prefix
301 1142 User Activity for the Past 30 Days II 34.5% Easy 0.46937947443508493 https://leetcode.com/problems/user-activity-for-the-past-30-days-ii
302 66 Plus One 43.0% Easy 0.4671814837705357 https://leetcode.com/problems/plus-one
303 443 String Compression 41.3% Easy 0.4648256809530135 https://leetcode.com/problems/string-compression
304 1132 Reported Posts II 34.4% Medium 0.4643731505984498 https://leetcode.com/problems/reported-posts-ii
305 153 Find Minimum in Rotated Sorted Array 45.1% Medium 0.4624492968139545 https://leetcode.com/problems/find-minimum-in-rotated-sorted-array
306 515 Find Largest Value in Each Tree Row 61.1% Medium 0.4594054982539122 https://leetcode.com/problems/find-largest-value-in-each-tree-row
307 1213 Intersection of Three Sorted Arrays 78.9% Easy 0.45778473187961194 https://leetcode.com/problems/intersection-of-three-sorted-arrays
308 223 Rectangle Area 37.8% Medium 0.4551885434605949 https://leetcode.com/problems/rectangle-area
309 1008 Construct Binary Search Tree from Preorder Traversal 78.4% Medium 0.44664069296978226 https://leetcode.com/problems/construct-binary-search-tree-from-preorder-traversal
310 63 Unique Paths II 34.6% Medium 0.4447194776965593 https://leetcode.com/problems/unique-paths-ii
311 108 Convert Sorted Array to Binary Search Tree 57.9% Easy 0.4427274468005625 https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree
312 564 Find the Closest Palindrome 19.7% Hard 0.43712242797885603 https://leetcode.com/problems/find-the-closest-palindrome
313 491 Increasing Subsequences 46.1% Medium 0.4337197757657639 https://leetcode.com/problems/increasing-subsequences
314 189 Rotate Array 34.7% Easy 0.42789160115933317 https://leetcode.com/problems/rotate-array
315 77 Combinations 54.7% Medium 0.42763619580710505 https://leetcode.com/problems/combinations
316 1233 Remove Sub-Folders from the Filesystem 59.5% Medium 0.4243747624654565 https://leetcode.com/problems/remove-sub-folders-from-the-filesystem
317 437 Path Sum III 47.2% Medium 0.41578386430953973 https://leetcode.com/problems/path-sum-iii
318 392 Is Subsequence 49.2% Easy 0.4144786135549692 https://leetcode.com/problems/is-subsequence
319 48 Rotate Image 56.7% Medium 0.41267616798758366 https://leetcode.com/problems/rotate-image
320 151 Reverse Words in a String 21.9% Medium 0.40449012406685037 https://leetcode.com/problems/reverse-words-in-a-string
321 776 Split BST 55.8% Medium 0.4013413909243023 https://leetcode.com/problems/split-bst
322 1264 Page Recommendations 67.6% Medium 0.39931124253378614 https://leetcode.com/problems/page-recommendations
323 688 Knight Probability in Chessboard 48.9% Medium 0.38977851194046487 https://leetcode.com/problems/knight-probability-in-chessboard
324 1424 Diagonal Traverse II 42.4% Medium 0.3873430652104741 https://leetcode.com/problems/diagonal-traverse-ii
325 136 Single Number 65.5% Easy 0.3708919589097458 https://leetcode.com/problems/single-number
326 7 Reverse Integer 25.8% Easy 0.36989351258944636 https://leetcode.com/problems/reverse-integer
327 167 Two Sum II - Input array is sorted 54.1% Easy 0.3697194122572466 https://leetcode.com/problems/two-sum-ii-input-array-is-sorted
328 547 Friend Circles 58.6% Medium 0.36668313802455266 https://leetcode.com/problems/friend-circles
329 407 Trapping Rain Water II 42.4% Hard 0.36621163438550147 https://leetcode.com/problems/trapping-rain-water-ii
330 150 Evaluate Reverse Polish Notation 36.3% Medium 0.3580974192852753 https://leetcode.com/problems/evaluate-reverse-polish-notation
331 1032 Stream of Characters 48.3% Hard 0.35736199308977074 https://leetcode.com/problems/stream-of-characters
332 345 Reverse Vowels of a String 44.2% Easy 0.35407324785389366 https://leetcode.com/problems/reverse-vowels-of-a-string
333 703 Kth Largest Element in a Stream 49.7% Easy 0.35302939867863786 https://leetcode.com/problems/kth-largest-element-in-a-stream
334 442 Find All Duplicates in an Array 67.8% Medium 0.35261504015383743 https://leetcode.com/problems/find-all-duplicates-in-an-array
335 862 Shortest Subarray with Sum at Least K 24.6% Hard 0.34470650089593724 https://leetcode.com/problems/shortest-subarray-with-sum-at-least-k
336 855 Exam Room 43.1% Medium 0.34442921752179523 https://leetcode.com/problems/exam-room
337 303 Range Sum Query - Immutable 44.7% Easy 0.33875458272156067 https://leetcode.com/problems/range-sum-query-immutable
338 435 Non-overlapping Intervals 42.9% Medium 0.33492740097938434 https://leetcode.com/problems/non-overlapping-intervals
339 110 Balanced Binary Tree 43.5% Easy 0.3341019099698985 https://leetcode.com/problems/balanced-binary-tree
340 1091 Shortest Path in Binary Matrix 38.2% Medium 0.3320988840413624 https://leetcode.com/problems/shortest-path-in-binary-matrix
341 228 Summary Ranges 39.5% Medium 0.33141882056106853 https://leetcode.com/problems/summary-ranges
342 827 Making A Large Island 45.7% Hard 0.32879599515977564 https://leetcode.com/problems/making-a-large-island
343 794 Valid Tic-Tac-Toe State 32.6% Medium 0.32676342249425205 https://leetcode.com/problems/valid-tic-tac-toe-state
344 384 Shuffle an Array 52.8% Medium 0.3251022057535279 https://leetcode.com/problems/shuffle-an-array
345 852 Peak Index in a Mountain Array 71.6% Easy 0.3250696045234013 https://leetcode.com/problems/peak-index-in-a-mountain-array
346 918 Maximum Sum Circular Subarray 33.7% Medium 0.31591744682247913 https://leetcode.com/problems/maximum-sum-circular-subarray
347 16 3Sum Closest 46.0% Medium 0.3149279072827814 https://leetcode.com/problems/3sum-closest
348 104 Maximum Depth of Binary Tree 66.0% Easy 0.31423184738371324 https://leetcode.com/problems/maximum-depth-of-binary-tree
349 686 Repeated String Match 32.3% Easy 0.3117796240308414 https://leetcode.com/problems/repeated-string-match
350 478 Generate Random Point in a Circle 38.5% Medium 0.30854721091574266 https://leetcode.com/problems/generate-random-point-in-a-circle
351 324 Wiggle Sort II 29.9% Medium 0.30770093934227283 https://leetcode.com/problems/wiggle-sort-ii
352 112 Path Sum 41.2% Easy 0.3008609933382415 https://leetcode.com/problems/path-sum
353 1245 Tree Diameter 60.1% Medium 0.29849298855599654 https://leetcode.com/problems/tree-diameter
354 936 Stamping The Sequence 42.8% Hard 0.2972515234679316 https://leetcode.com/problems/stamping-the-sequence
355 641 Design Circular Deque 52.7% Medium 0.29571424414904524 https://leetcode.com/problems/design-circular-deque
356 155 Min Stack 44.5% Easy 0.29559427979545205 https://leetcode.com/problems/min-stack
357 171 Excel Sheet Column Number 55.9% Easy 0.2930854047798333 https://leetcode.com/problems/excel-sheet-column-number
358 377 Combination Sum IV 45.3% Medium 0.2908416327421494 https://leetcode.com/problems/combination-sum-iv
359 60 Permutation Sequence 38.4% Hard 0.28587071214283233 https://leetcode.com/problems/permutation-sequence
360 662 Maximum Width of Binary Tree 41.0% Medium 0.2838096534681729 https://leetcode.com/problems/maximum-width-of-binary-tree
361 382 Linked List Random Node 52.1% Medium 0.2802157173642045 https://leetcode.com/problems/linked-list-random-node
362 730 Count Different Palindromic Subsequences 41.8% Hard 0.2744368457017603 https://leetcode.com/problems/count-different-palindromic-subsequences
363 414 Third Maximum Number 30.5% Easy 0.2737911401418798 https://leetcode.com/problems/third-maximum-number
364 759 Employee Free Time 66.3% Hard 0.27104379818721386 https://leetcode.com/problems/employee-free-time
365 983 Minimum Cost For Tickets 60.5% Medium 0.26701398643191887 https://leetcode.com/problems/minimum-cost-for-tickets
366 450 Delete Node in a BST 43.1% Medium 0.2618604317292985 https://leetcode.com/problems/delete-node-in-a-bst
367 210 Course Schedule II 40.7% Medium 0.26122098917206793 https://leetcode.com/problems/course-schedule-ii
368 505 The Maze II 47.7% Medium 0.2590886081881086 https://leetcode.com/problems/the-maze-ii
369 663 Equal Tree Partition 39.5% Medium 0.2578291093020998 https://leetcode.com/problems/equal-tree-partition
370 234 Palindrome Linked List 39.3% Easy 0.25526989045710297 https://leetcode.com/problems/palindrome-linked-list
371 446 Arithmetic Slices II - Subsequence 32.7% Hard 0.25416851512733507 https://leetcode.com/problems/arithmetic-slices-ii-subsequence
372 609 Find Duplicate File in System 59.5% Medium 0.25388017696233983 https://leetcode.com/problems/find-duplicate-file-in-system
373 168 Excel Sheet Column Title 31.1% Easy 0.24683273722531368 https://leetcode.com/problems/excel-sheet-column-title
374 307 Range Sum Query - Mutable 34.6% Medium 0.24328779711400658 https://leetcode.com/problems/range-sum-query-mutable
375 716 Max Stack 42.6% Easy 0.24108416003009112 https://leetcode.com/problems/max-stack
376 188 Best Time to Buy and Sell Stock IV 28.0% Hard 0.2362134701793093 https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iv
377 655 Print Binary Tree 55.0% Medium 0.23545681154756673 https://leetcode.com/problems/print-binary-tree
378 344 Reverse String 68.5% Easy 0.23528503471044915 https://leetcode.com/problems/reverse-string
379 654 Maximum Binary Tree 79.9% Medium 0.2271957154126144 https://leetcode.com/problems/maximum-binary-tree
380 221 Maximal Square 37.7% Medium 0.2218511119038007 https://leetcode.com/problems/maximal-square
381 159 Longest Substring with At Most Two Distinct Characters 49.4% Medium 0.22148929121818325 https://leetcode.com/problems/longest-substring-with-at-most-two-distinct-characters
382 241 Different Ways to Add Parentheses 55.2% Medium 0.22096511694444815 https://leetcode.com/problems/different-ways-to-add-parentheses
383 750 Number Of Corner Rectangles 66.4% Medium 0.22067136216882066 https://leetcode.com/problems/number-of-corner-rectangles
384 516 Longest Palindromic Subsequence 53.2% Medium 0.2156692799855616 https://leetcode.com/problems/longest-palindromic-subsequence
385 417 Pacific Atlantic Water Flow 41.1% Medium 0.2125614419836728 https://leetcode.com/problems/pacific-atlantic-water-flow
386 669 Trim a Binary Search Tree 63.0% Easy 0.21245865121419338 https://leetcode.com/problems/trim-a-binary-search-tree
387 410 Split Array Largest Sum 44.5% Hard 0.2113090936672069 https://leetcode.com/problems/split-array-largest-sum
388 261 Graph Valid Tree 42.2% Medium 0.21068350715947268 https://leetcode.com/problems/graph-valid-tree
389 6 ZigZag Conversion 36.3% Medium 0.21040551802808702 https://leetcode.com/problems/zigzag-conversion
390 503 Next Greater Element II 56.5% Medium 0.20963047971710957 https://leetcode.com/problems/next-greater-element-ii
391 312 Burst Balloons 51.8% Hard 0.20921375502735295 https://leetcode.com/problems/burst-balloons
392 1053 Previous Permutation With One Swap 48.5% Medium 0.20909179785855941 https://leetcode.com/problems/previous-permutation-with-one-swap
393 315 Count of Smaller Numbers After Self 41.5% Hard 0.20806843787404064 https://leetcode.com/problems/count-of-smaller-numbers-after-self
394 884 Uncommon Words from Two Sentences 63.3% Easy 0.2078703916939076 https://leetcode.com/problems/uncommon-words-from-two-sentences
395 290 Word Pattern 37.0% Easy 0.20496634325524304 https://leetcode.com/problems/word-pattern
396 371 Sum of Two Integers 50.7% Medium 0.20426967106919308 https://leetcode.com/problems/sum-of-two-integers
397 752 Open the Lock 51.8% Medium 0.20214045265154648 https://leetcode.com/problems/open-the-lock
398 578 Get Highest Answer Rate Question 39.3% Medium 0.20157261209600713 https://leetcode.com/problems/get-highest-answer-rate-question
399 714 Best Time to Buy and Sell Stock with Transaction Fee 54.7% Medium 0.19966567025192705 https://leetcode.com/problems/best-time-to-buy-and-sell-stock-with-transaction-fee
400 886 Possible Bipartition 44.2% Medium 0.19624555983340192 https://leetcode.com/problems/possible-bipartition
401 496 Next Greater Element I 63.8% Easy 0.19278708883361578 https://leetcode.com/problems/next-greater-element-i
402 178 Rank Scores 45.8% Medium 0.18843907402659216 https://leetcode.com/problems/rank-scores
403 681 Next Closest Time 45.0% Medium 0.18812615225992188 https://leetcode.com/problems/next-closest-time
404 103 Binary Tree Zigzag Level Order Traversal 48.3% Medium 0.18805467423313033 https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal
405 981 Time Based Key-Value Store 53.1% Medium 0.1844764271644963 https://leetcode.com/problems/time-based-key-value-store
406 889 Construct Binary Tree from Preorder and Postorder Traversal 66.2% Medium 0.18315872720701828 https://leetcode.com/problems/construct-binary-tree-from-preorder-and-postorder-traversal
407 593 Valid Square 43.1% Medium 0.181905842799192 https://leetcode.com/problems/valid-square
408 916 Word Subsets 47.8% Medium 0.181583821607415 https://leetcode.com/problems/word-subsets
409 9 Palindrome Number 48.4% Easy 0.17791287714642806 https://leetcode.com/problems/palindrome-number
410 130 Surrounded Regions 28.1% Medium 0.17613332483584074 https://leetcode.com/problems/surrounded-regions
411 328 Odd Even Linked List 55.7% Medium 0.17548836529558792 https://leetcode.com/problems/odd-even-linked-list
412 843 Guess the Word 46.1% Hard 0.17062551703076334 https://leetcode.com/problems/guess-the-word
413 413 Arithmetic Slices 57.9% Medium 0.1657221570563033 https://leetcode.com/problems/arithmetic-slices
414 535 Encode and Decode TinyURL 79.9% Medium 0.15827628732919474 https://leetcode.com/problems/encode-and-decode-tinyurl
415 106 Construct Binary Tree from Inorder and Postorder Traversal 47.2% Medium 0.1563992524301298 https://leetcode.com/problems/construct-binary-tree-from-inorder-and-postorder-traversal
416 373 Find K Pairs with Smallest Sums 36.7% Medium 0.15386549516826 https://leetcode.com/problems/find-k-pairs-with-smallest-sums
417 676 Implement Magic Dictionary 54.5% Medium 0.15104025741286586 https://leetcode.com/problems/implement-magic-dictionary
418 723 Candy Crush 69.2% Medium 0.1475667107409061 https://leetcode.com/problems/candy-crush
419 113 Path Sum II 46.7% Medium 0.14611171121171676 https://leetcode.com/problems/path-sum-ii
420 95 Unique Binary Search Trees II 40.6% Medium 0.14236392393156927 https://leetcode.com/problems/unique-binary-search-trees-ii
421 172 Factorial Trailing Zeroes 37.8% Easy 0.14144572792198667 https://leetcode.com/problems/factorial-trailing-zeroes
422 176 Second Highest Salary 31.6% Easy 0.1400039071301401 https://leetcode.com/problems/second-highest-salary
423 250 Count Univalue Subtrees 52.0% Medium 0.13767409129953323 https://leetcode.com/problems/count-univalue-subtrees
424 1209 Remove All Adjacent Duplicates in String II 56.9% Medium 0.13712574822724946 https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string-ii
425 1043 Partition Array for Maximum Sum 65.2% Medium 0.13636827395972229 https://leetcode.com/problems/partition-array-for-maximum-sum
426 204 Count Primes 31.5% Easy 0.13428518935681233 https://leetcode.com/problems/count-primes
427 100 Same Tree 53.4% Easy 0.1318171127859705 https://leetcode.com/problems/same-tree
428 226 Invert Binary Tree 65.0% Easy 0.12934562157317617 https://leetcode.com/problems/invert-binary-tree
429 274 H-Index 36.1% Medium 0.12827809724117692 https://leetcode.com/problems/h-index
430 338 Counting Bits 69.5% Medium 0.12580669538551648 https://leetcode.com/problems/counting-bits
431 461 Hamming Distance 72.8% Easy 0.12570469475928556 https://leetcode.com/problems/hamming-distance
432 1146 Snapshot Array 37.0% Medium 0.12154546954921416 https://leetcode.com/problems/snapshot-array
433 572 Subtree of Another Tree 44.1% Easy 0.12110558833260582 https://leetcode.com/problems/subtree-of-another-tree
434 222 Count Complete Tree Nodes 46.8% Medium 0.119584908524332 https://leetcode.com/problems/count-complete-tree-nodes
435 848 Shifting Letters 44.6% Medium 0.11918851726511835 https://leetcode.com/problems/shifting-letters
436 1439 Find the Kth Smallest Sum of a Matrix With Sorted Rows 59.5% Hard 0.11918851726511835 https://leetcode.com/problems/find-the-kth-smallest-sum-of-a-matrix-with-sorted-rows
437 179 Largest Number 28.8% Medium 0.11836460008103292 https://leetcode.com/problems/largest-number
438 525 Contiguous Array 42.8% Medium 0.11750591219610916 https://leetcode.com/problems/contiguous-array
439 268 Missing Number 51.7% Easy 0.11538834636572094 https://leetcode.com/problems/missing-number
440 1275 Find Winner on a Tic Tac Toe Game 52.8% Easy 0.11536465479210183 https://leetcode.com/problems/find-winner-on-a-tic-tac-toe-game
441 61 Rotate List 30.0% Medium 0.11528615545779625 https://leetcode.com/problems/rotate-list
442 1047 Remove All Adjacent Duplicates In String 68.6% Easy 0.11181352460393465 https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string
443 265 Paint House II 44.6% Hard 0.1088028598487991 https://leetcode.com/problems/paint-house-ii
444 792 Number of Matching Subsequences 47.4% Medium 0.10867135530512761 https://leetcode.com/problems/number-of-matching-subsequences
445 181 Employees Earning More Than Their Managers 56.9% Easy 0.10821358464023274 https://leetcode.com/problems/employees-earning-more-than-their-managers
446 279 Perfect Squares 47.4% Medium 0.10744168186165087 https://leetcode.com/problems/perfect-squares
447 966 Vowel Spellchecker 47.2% Medium 0.10676797542570607 https://leetcode.com/problems/vowel-spellchecker
448 70 Climbing Stairs 47.8% Easy 0.10352088064831867 https://leetcode.com/problems/climbing-stairs
449 773 Sliding Puzzle 59.3% Hard 0.10294796925244239 https://leetcode.com/problems/sliding-puzzle
450 118 Pascal's Triangle 52.5% Easy 0.10288539275725785 https://leetcode.com/problems/pascals-triangle
451 1379 Find a Corresponding Node of a Binary Tree in a Clone of That Tree 83.8% Medium 0.10186917331721722 https://leetcode.com/problems/find-a-corresponding-node-of-a-binary-tree-in-a-clone-of-that-tree
452 1411 Number of Ways to Paint N × 3 Grid 61.1% Hard 0.10135249426028749 https://leetcode.com/problems/number-of-ways-to-paint-n-3-grid
453 402 Remove K Digits 28.4% Medium 0.10101435005393304 https://leetcode.com/problems/remove-k-digits
454 141 Linked List Cycle 41.1% Easy 0.10063328674952829 https://leetcode.com/problems/linked-list-cycle
455 628 Maximum Product of Three Numbers 47.1% Easy 0.09909090264423091 https://leetcode.com/problems/maximum-product-of-three-numbers
456 1141 User Activity for the Past 30 Days I 54.1% Easy 0.09646026618756222 https://leetcode.com/problems/user-activity-for-the-past-30-days-i
457 59 Spiral Matrix II 53.9% Medium 0.09483978737982436 https://leetcode.com/problems/spiral-matrix-ii
458 821 Shortest Distance to a Character 66.9% Easy 0.09450889771017068 https://leetcode.com/problems/shortest-distance-to-a-character
459 1062 Longest Repeating Substring 57.2% Medium 0.09201889872025212 https://leetcode.com/problems/longest-repeating-substring
460 1077 Project Employees III 75.6% Medium 0.0907652093142671 https://leetcode.com/problems/project-employees-iii
461 1241 Number of Comments per Post 67.0% Easy 0.0891458495182624 https://leetcode.com/problems/number-of-comments-per-post
462 652 Find Duplicate Subtrees 50.2% Medium 0.08907963005368878 https://leetcode.com/problems/find-duplicate-subtrees
463 995 Minimum Number of K Consecutive Bit Flips 46.8% Hard 0.08894748601649616 https://leetcode.com/problems/minimum-number-of-k-consecutive-bit-flips
464 788 Rotated Digits 57.1% Easy 0.08743429938967429 https://leetcode.com/problems/rotated-digits
465 1108 Defanging an IP Address 87.5% Easy 0.08632116644802212 https://leetcode.com/problems/defanging-an-ip-address
466 287 Find the Duplicate Number 55.5% Medium 0.0845834791494423 https://leetcode.com/problems/find-the-duplicate-number
467 1019 Next Greater Node In Linked List 57.4% Medium 0.08373089291046797 https://leetcode.com/problems/next-greater-node-in-linked-list
468 550 Game Play Analysis IV 45.3% Medium 0.08286311601350513 https://leetcode.com/problems/game-play-analysis-iv
469 962 Maximum Width Ramp 45.4% Medium 0.08184524810424337 https://leetcode.com/problems/maximum-width-ramp
470 698 Partition to K Equal Sum Subsets 45.0% Medium 0.08184524810424337 https://leetcode.com/problems/partition-to-k-equal-sum-subsets
471 887 Super Egg Drop 27.1% Hard 0.08054440988796595 https://leetcode.com/problems/super-egg-drop
472 673 Number of Longest Increasing Subsequence 35.7% Medium 0.08025695513016742 https://leetcode.com/problems/number-of-longest-increasing-subsequence
473 1003 Check If Word Is Valid After Substitutions 55.3% Medium 0.07847161544149522 https://leetcode.com/problems/check-if-word-is-valid-after-substitutions
474 1254 Number of Closed Islands 60.5% Medium 0.07796154146971186 https://leetcode.com/problems/number-of-closed-islands
475 1055 Shortest Way to Form String 56.9% Medium 0.07681317776161672 https://leetcode.com/problems/shortest-way-to-form-string
476 778 Swim in Rising Water 53.1% Hard 0.07651914983419623 https://leetcode.com/problems/swim-in-rising-water
477 229 Majority Element II 35.6% Medium 0.0741423287407419 https://leetcode.com/problems/majority-element-ii
478 787 Cheapest Flights Within K Stops 39.3% Medium 0.0732592918006526 https://leetcode.com/problems/cheapest-flights-within-k-stops
479 1287 Element Appearing More Than 25% In Sorted Array 60.2% Easy 0.07284773254143415 https://leetcode.com/problems/element-appearing-more-than-25-in-sorted-array
480 1057 Campus Bikes 57.7% Medium 0.07107786641655695 https://leetcode.com/problems/campus-bikes
481 289 Game of Life 54.5% Medium 0.06756473699960104 https://leetcode.com/problems/game-of-life
482 997 Find the Town Judge 50.1% Easy 0.06548984513511495 https://leetcode.com/problems/find-the-town-judge
483 726 Number of Atoms 49.0% Hard 0.06371581438610768 https://leetcode.com/problems/number-of-atoms
484 509 Fibonacci Number 67.2% Easy 0.06227154155782137 https://leetcode.com/problems/fibonacci-number
485 472 Concatenated Words 43.7% Hard 0.06120196522807572 https://leetcode.com/problems/concatenated-words
486 353 Design Snake Game 34.2% Medium 0.06053284922884233 https://leetcode.com/problems/design-snake-game
487 1445 Apples & Oranges 87.1% Medium 0.05954139369101661 https://leetcode.com/problems/apples-oranges
488 217 Contains Duplicate 56.0% Easy 0.05910139227591337 https://leetcode.com/problems/contains-duplicate
489 1305 All Elements in Two Binary Search Trees 76.1% Medium 0.05819353408024827 https://leetcode.com/problems/all-elements-in-two-binary-search-trees
490 979 Distribute Coins in Binary Tree 68.9% Medium 0.05800594958851697 https://leetcode.com/problems/distribute-coins-in-binary-tree
491 83 Remove Duplicates from Sorted List 45.4% Easy 0.055776537457411894 https://leetcode.com/problems/remove-duplicates-from-sorted-list
492 653 Two Sum IV - Input is a BST 55.5% Easy 0.055724721838100025 https://leetcode.com/problems/two-sum-iv-input-is-a-bst
493 202 Happy Number 50.4% Easy 0.05503451923624455 https://leetcode.com/problems/happy-number
494 310 Minimum Height Trees 32.3% Medium 0.05423015406086025 https://leetcode.com/problems/minimum-height-trees
495 679 24 Game 46.4% Hard 0.05341723749698583 https://leetcode.com/problems/24-game
496 203 Remove Linked List Elements 38.6% Easy 0.04798700179553833 https://leetcode.com/problems/remove-linked-list-elements
497 205 Isomorphic Strings 39.8% Easy 0.045397866271290506 https://leetcode.com/problems/isomorphic-strings
498 733 Flood Fill 55.3% Easy 0.04413292021115189 https://leetcode.com/problems/flood-fill
499 1498 Number of Subsequences That Satisfy the Given Sum Condition 36.7% Medium 0.04334372921647208 https://leetcode.com/problems/number-of-subsequences-that-satisfy-the-given-sum-condition
500 611 Valid Triangle Number 48.4% Medium 0.04255961441879593 https://leetcode.com/problems/valid-triangle-number
501 1219 Path with Maximum Gold 65.1% Medium 0.04111576039097048 https://leetcode.com/problems/path-with-maximum-gold
502 260 Single Number III 64.3% Medium 0.0403019568058018 https://leetcode.com/problems/single-number-iii
503 739 Daily Temperatures 63.3% Medium 0.03954060923825168 https://leetcode.com/problems/daily-temperatures
504 406 Queue Reconstruction by Height 66.9% Medium 0.03949613834265583 https://leetcode.com/problems/queue-reconstruction-by-height
505 706 Design HashMap 61.3% Easy 0.039016652342451774 https://leetcode.com/problems/design-hashmap
506 872 Leaf-Similar Trees 64.5% Easy 0.03899974309382511 https://leetcode.com/problems/leaf-similar-trees
507 993 Cousins in Binary Tree 52.0% Easy 0.03876454345024432 https://leetcode.com/problems/cousins-in-binary-tree
508 337 House Robber III 50.6% Medium 0.03825370795946937 https://leetcode.com/problems/house-robber-iii
509 905 Sort Array By Parity 74.1% Easy 0.03787434929243582 https://leetcode.com/problems/sort-array-by-parity
510 1031 Maximum Sum of Two Non-Overlapping Subarrays 57.9% Medium 0.03711000965123125 https://leetcode.com/problems/maximum-sum-of-two-non-overlapping-subarrays
511 646 Maximum Length of Pair Chain 51.9% Medium 0.036870535808327706 https://leetcode.com/problems/maximum-length-of-pair-chain
512 376 Wiggle Subsequence 39.6% Medium 0.03666771919188123 https://leetcode.com/problems/wiggle-subsequence
513 96 Unique Binary Search Trees 52.9% Medium 0.036467121912812143 https://leetcode.com/problems/unique-binary-search-trees
514 701 Insert into a Binary Search Tree 77.7% Medium 0.03459222693591465 https://leetcode.com/problems/insert-into-a-binary-search-tree
515 309 Best Time to Buy and Sell Stock with Cooldown 47.4% Medium 0.034362822747185016 https://leetcode.com/problems/best-time-to-buy-and-sell-stock-with-cooldown
516 1360 Number of Days Between Two Dates 48.8% Easy 0.03401688527825427 https://leetcode.com/problems/number-of-days-between-two-dates
517 154 Find Minimum in Rotated Sorted Array II 41.6% Hard 0.033505725418712703 https://leetcode.com/problems/find-minimum-in-rotated-sorted-array-ii
518 80 Remove Duplicates from Sorted Array II 44.0% Medium 0.03303052567648182 https://leetcode.com/problems/remove-duplicates-from-sorted-array-ii
519 832 Flipping an Image 76.2% Easy 0.03267078228954871 https://leetcode.com/problems/flipping-an-image
520 605 Can Place Flowers 31.6% Easy 0.02457126073050533 https://leetcode.com/problems/can-place-flowers
521 64 Minimum Path Sum 54.5% Medium 0.024287775531756203 https://leetcode.com/problems/minimum-path-sum
522 1137 N-th Tribonacci Number 55.9% Easy 0.02072613051711693 https://leetcode.com/problems/n-th-tribonacci-number
523 237 Delete Node in a Linked List 63.8% Easy 0.020421896704473325 https://leetcode.com/problems/delete-node-in-a-linked-list
524 1266 Minimum Time Visiting All Points 79.6% Easy 0.017354014693151613 https://leetcode.com/problems/minimum-time-visiting-all-points
525 1021 Remove Outermost Parentheses 78.0% Easy 0.016434223613379935 https://leetcode.com/problems/remove-outermost-parentheses
526 771 Jewels and Stones 86.4% Easy 0.01631653312373806 https://leetcode.com/problems/jewels-and-stones
527 1304 Find N Unique Integers Sum up to Zero 76.3% Easy 0.015892269319508656 https://leetcode.com/problems/find-n-unique-integers-sum-up-to-zero
528 404 Sum of Left Leaves 50.9% Easy 0.013981353230340547 https://leetcode.com/problems/sum-of-left-leaves
529 451 Sort Characters By Frequency 63.0% Medium 0.013153757558740521 https://leetcode.com/problems/sort-characters-by-frequency
530 1143 Longest Common Subsequence 58.4% Medium 0.008835931134362285 https://leetcode.com/problems/longest-common-subsequence
531 763 Partition Labels 76.1% Medium 0.008385793376274025 https://leetcode.com/problems/partition-labels
532 1528 Shuffle String 86.1% Easy 0.006295047716793515 https://leetcode.com/problems/shuffle-string
533 275 H-Index II 36.0% Medium 0 https://leetcode.com/problems/h-index-ii
534 745 Prefix and Suffix Search 34.1% Hard 0 https://leetcode.com/problems/prefix-and-suffix-search
535 764 Largest Plus Sign 46.0% Medium 0 https://leetcode.com/problems/largest-plus-sign
536 784 Letter Case Permutation 64.6% Medium 0 https://leetcode.com/problems/letter-case-permutation
537 801 Minimum Swaps To Make Sequences Increasing 38.9% Medium 0 https://leetcode.com/problems/minimum-swaps-to-make-sequences-increasing
538 893 Groups of Special-Equivalent Strings 66.5% Easy 0 https://leetcode.com/problems/groups-of-special-equivalent-strings
539 968 Binary Tree Cameras 37.5% Hard 0 https://leetcode.com/problems/binary-tree-cameras
540 989 Add to Array-Form of Integer 44.2% Easy 0 https://leetcode.com/problems/add-to-array-form-of-integer
541 998 Maximum Binary Tree II 63.0% Medium 0 https://leetcode.com/problems/maximum-binary-tree-ii
542 1033 Moving Stones Until Consecutive 41.7% Easy 0 https://leetcode.com/problems/moving-stones-until-consecutive
543 1040 Moving Stones Until Consecutive II 52.9% Medium 0 https://leetcode.com/problems/moving-stones-until-consecutive-ii
544 1075 Project Employees I 64.8% Easy 0 https://leetcode.com/problems/project-employees-i
545 1076 Project Employees II 53.7% Easy 0 https://leetcode.com/problems/project-employees-ii
546 1361 Validate Binary Tree Nodes 48.5% Medium 0 https://leetcode.com/problems/validate-binary-tree-nodes
547 1211 Queries Quality and Percentage 68.3% Easy 0 https://leetcode.com/problems/queries-quality-and-percentage
548 1225 Report Contiguous Dates 61.1% Hard 0 https://leetcode.com/problems/report-contiguous-dates
549 1236 Web Crawler 64.3% Medium 0 https://leetcode.com/problems/web-crawler
550 1322 Ads Performance 57.8% Easy 0 https://leetcode.com/problems/ads-performance
551 1357 Apply Discount Every n Orders 66.0% Medium 0 https://leetcode.com/problems/apply-discount-every-n-orders
552 1398 Customers Who Bought Products A and B but Not C 80.7% Medium 0 https://leetcode.com/problems/customers-who-bought-products-a-and-b-but-not-c
553 1443 Minimum Time to Collect All Apples in a Tree 55.4% Medium 0 https://leetcode.com/problems/minimum-time-to-collect-all-apples-in-a-tree
554 1460 Make Two Arrays Equal by Reversing Sub-arrays 73.9% Easy 0 https://leetcode.com/problems/make-two-arrays-equal-by-reversing-sub-arrays
555 1453 Maximum Number of Darts Inside of a Circular Dartboard 33.7% Hard 0 https://leetcode.com/problems/maximum-number-of-darts-inside-of-a-circular-dartboard
556 1522 Diameter of N-Ary Tree 70.0% Medium 0 https://leetcode.com/problems/diameter-of-n-ary-tree